Dr. James C. Gates Profile

Dr. James C. Gates

Principal Research Fellow at Optoelectronics Research Ctr

SPIE Involvement:

Author

Publications (38)

Proceedings Article | 13 March 2024 Presentation

Direct UV written Bragg gratings in lithium niobate ridge waveguides for analysis of process uniformity

Rex H. Bannerman, James Field, Q. Salman Ahmed, Paul Gow, James Gates, Peter G. Smith, Corin B. Gawith

Proceedings Volume PC12869, PC128690B (2024) https://doi.org/10.1117/12.3001044

KEYWORDS: Waveguides, Bragg gratings, Lithium niobate, Ultraviolet radiation, Analytical research, Second harmonic generation, Refractive index, Optical gratings, Zinc, Wave propagation

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Proceedings Article | 13 March 2024 Presentation

Demonstration of holographically fabricated large grating couplers for integrated circular beam delivery

Salman Ahmed, James Field, Dong-Woo Ko, Peter Horak, Christopher Holmes, Peter Smith, Paul Gow, Corin Gawith, James Gates, Rex H. Bannerman

Proceedings Volume PC12889, PC128890J (2024) https://doi.org/10.1117/12.3001912

KEYWORDS: Beam delivery, Holography, Blazed gratings, Optical gratings, Ultraviolet radiation, Free space, Fabrication, Pulsed laser operation, Prisms, Optical alignment

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Proceedings Article | 13 March 2024 Presentation

Developing zinc-indiffused PPLN ridge waveguides for UV, visible and MIR quantum applications

Noelia Palomar Davidson, Goronwy Tawy, Glenn Churchill, Paolo Mennea, Lewis Wright, Greg Blanchard-Emmerson, James Gates, Peter G. Smith, Corin B. Gawith

Proceedings Volume PC12869, PC128690A (2024) https://doi.org/10.1117/12.3001714

KEYWORDS: Waveguides, Ultraviolet radiation, Quantum applications, Visible radiation, Second harmonic generation, Optical fibers, Waveguide modes, Upconversion, Surface roughness, Single photon detectors

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Proceedings Article | 13 March 2024 Poster

Optimisation of dicing parameters for lithium niobate ridge waveguide fabrication

Matthew D'Souza, Glenn Churchill, Paul Gow, Peter G. Smith, Corin B. Gawith, James Gates

Proceedings Volume PC12898, PC128980W (2024) https://doi.org/10.1117/12.3003114

KEYWORDS: Lithium niobate, Waveguides, Fabrication, Surface roughness, Yttrium, YAG lasers, Tolerancing, Silicon nitride, Radium, Polishing

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Proceedings Article | 12 March 2024 Paper

Enabling light coupling between nanowires and low refractive index contrast optical waveguides towards scalable quantum circuits

Symeon Tsintzos, Konstantinos Tsimvrakidis, Alexandra Sinani, James Gates, Ali Elshaari, Peter G. Smith, Val Zwiller, Christos Riziotis

Proceedings Volume 12889, 1288913 (2024) https://doi.org/10.1117/12.3003074

KEYWORDS: Microspheres, Waveguides, Nanowires, Refractive index, Electric fields, Photonic nanostructures, Silica, Quantum light, Channel waveguides, Quantum emitters

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Proceedings Article | 12 March 2024 Presentation + Paper

375-400nm SHG Alexandrite laser using Zn-indiffused MgO:PPLN ridge waveguides

Goronwy Tawy, Noelia Palomar Davidson, Lewis Wright, Paolo Mennea, Glenn Churchill, Peter G. Smith, James Gates, Corin B. Gawith

Proceedings Volume 12864, 128640J (2024) https://doi.org/10.1117/12.3001051

KEYWORDS: Waveguides, Second harmonic generation, Alexandrite lasers, Ultraviolet radiation, Phase matching, Infrared radiation, Crystals, Alexandrite, Semiconductor lasers, Quantum light generation

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Proceedings Article | 8 March 2024 Presentation + Paper

Si-rich silicon nitride for nonlinear signal processing applications

Frederic Gardes, Valerio Vitali, Thalía Domínguez Bucio, Hao Liu, José Manuel Luque González, Francisco Jurado-Romero, Alejandro Ortega-Moñux, Glenn Churchill, James Gates, James Hillier, Nikolaos Kalfagiannis, Daniele Melati, Ilaria Cristiani, Jens Schmid, Pavel Cheben, J. Gonzalo Wangüemert-Pérez, Íñigo Molina-Fernández, Cosimo Lacava, Periklis Petropoulos

Proceedings Volume 12890, 128900D (2024) https://doi.org/10.1117/12.3025186

KEYWORDS: Waveguides, Silicon nitride, Bragg wavelengths, Signal processing, Nonlinear optics, Silicon, Multiplexing, Four wave mixing, Signal attenuation, Scattering

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Proceedings Article | 13 March 2023 Presentation + Paper

Effects of ultraviolet exposure on silicon nitride and its application in tuning passive photonic devices

Greta De Paoli, Alexander Flint, Thalía Domínguez Bucio, Graham Reed, James Gates, Frederic Gardes

Proceedings Volume 12426, 124260J (2023) https://doi.org/10.1117/12.2647364

KEYWORDS: Silicon nitride, Ultraviolet radiation, Refractive index, Photonic devices, Light emitting diodes, Plasma enhanced chemical vapor deposition, Laser sources

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Proceedings Article | 30 May 2022 Presentation

Functionalised optical fiber devices for nonlinear photonics: from high harmonics generation to frequency comb

Francesco De Lucia, Nico Englebert, Francois Leo, Pier Sazio, Adam Lewis, Rex Bannerman, James Gates, Gilberto Brambilla

Proceedings Volume PC12142, PC121420D (2022) https://doi.org/10.1117/12.2620972

KEYWORDS: Optical fibers, Frequency combs, Photonics, Nonlinear optics, High harmonic generation, Thermal effects, Nonlinear crystals, Materials processing, Laser damage threshold, Glasses

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SPIE Journal Paper | 11 April 2022 Open Access

Quantum entanglement demonstrator for public engagement

Paul Gow, James Gates, Rex H. Bannerman, Joshua Nunn, Paolo Mennea, Peter G. R. Smith

OE, Vol. 61, Issue 08, 081802, (April 2022) https://doi.org/10.1117/12.10.1117/1.OE.61.8.081802

KEYWORDS: Ions, Photons, Photonics, Switches, Optical engineering, Software development, Quantum information, Quantum computing, Semiconductor lasers, Fiber optics

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Proceedings Article | 5 March 2022 Presentation + Paper

UV-written silicon nitride integrated optical phased arrays

S. Ilie, G. De Paoli, A. Flint, T. Dominguez Bucio, P. Ginel-Moreno, J. Sagar, A. Ortega-Monux, K. Lekkas, T. Rutirawut, L. Mastronardi, I. Skandalos, I. Molina Fernandez, G. Kanellos, P. Cheben, P. G. R. Smith, J. Gates, F. Gardes

Proceedings Volume 12005, 1200504 (2022) https://doi.org/10.1117/12.2608824

KEYWORDS: Antennas, Waveguides, Silicon, Refractive index, Ultraviolet radiation, Optical design, Chemical elements, Lithography, Deep ultraviolet, Telecommunications

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Proceedings Article | 1 April 2020 Presentation

Four-port integrated waveguide coupler exploiting bidirectional propagation of two single-mode waveguides (Conference Presentation)

Mathias Weisen, James Gates, Corin B. Gawith, Peter G. Smith, Peter Horak

Proceedings Volume 11345, 113451K (2020) https://doi.org/10.1117/12.2555127

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Proceedings Article | 3 March 2020 Presentation + Paper

Photonic glass ceramics based on SnO2 nanocrystals: advances and perspectives

Lam Thi Ngoc Tran, Cristina Armellini, Rolindes Balda, Mourad Benabdesselam, Simone Berneschi, Wilfried Blanc, Brigitte Boulard, Alessandro Carpentiero, Andrea Chiappini, Alessandro Chiasera, Paola Dentella, Dominik Dorosz, Shane Eaton, Mario Christian Falconi, Joaquin Fernandez, Maurizio Ferrari, James Gates, Pawel Gluchowski, Gloria Ischia, Anna Lukowiak, Franck Mady, Damiano Massella, Gualtiero Nunzi Conti, Francesco Prudenzano, Barbara Rossi, Roberta Ramponi, Giancarlo Righini, Pier-John Sazio, Giorgio Speranza, Stefano Varas, Daniele Zonta, Lidia Zur

Proceedings Volume 11276, 1127614 (2020) https://doi.org/10.1117/12.2547526

KEYWORDS: Nanocrystals, Erbium, Sol-gels, Planar waveguides, Absorption, Ions, Photonic glasses, Luminescence, Glasses, Ultraviolet radiation

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Proceedings Article | 25 February 2020 Paper

Optimizing resolution in an integrated blazed chirped Bragg grating spectrometer

James Field, Sam Berry, Rex H. Bannerman, Corin B. Gawith, Peter G. Smith, James Gates

Proceedings Volume 11283, 112831G (2020) https://doi.org/10.1117/12.2546195

KEYWORDS: Bragg gratings, Spectroscopy, Waveguides, Diffraction gratings, Sensors, Cameras, Ultraviolet radiation, Spectral resolution, Spectrometers

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Proceedings Article | 18 February 2020 Paper

Enhancing the nonlinear functionality of step-index silica fibers through the combination of thermal poling and 2D materials

F. De Lucia, A. Lewis, R. H. Bannerman, N. Englebert, M. M. Nunez Velazquez, C.-C. Huang, J. Gates, S.-P. Gorza, J. Sahu, F. Leo, D. Hewak, P. J. Sazio

Proceedings Volume 11282, 1128212 (2020) https://doi.org/10.1117/12.2544140

KEYWORDS: Optical fibers, Cladding, Silica, Glasses, Molybdenum, Electrodes, Thermal effects, Nonlinear optics, Raman spectroscopy, Transition metals

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Thermal poling, a technique to create permanently effective second-order susceptibility in silica optical fibers, has recently been improved by the discovery of an “induction poling” technique¹ and the adoption of liquid electrodes², allowing for poling fibers of any length and geometry. Nevertheless, the nonlinearity created via thermal poling is always limited by the 𝜒⁽³⁾of the optical fiber material and by the maximum electric field that can be frozen inside the glass. For these reasons research is ongoing to determine routes for further improving the nonlinear effects due to the thermal poling process. In this work, we propose to enhance the effects of the thermal poling by exploiting the intrinsic nonlinear properties of some 2D materials³, which are deposited inside the cladding holes of a twin-hole silica fiber. The materials we focused on are 2D Transition Metal Chalcogenide (2D TMDC) MoS₂ and WS₂ and the technique adopted to realize the deposition inside the cladding channels of a twin-hole step index silica fiber consists of a thermal decomposition process4 of the precursor ammonium tetrathiomolybdate (NH4)2MoS⁴ in 6% H₂/Ar flow. The technique has allowed us to uniformly coat the two cladding channels for a length of ≈25 cm with a film nominally consisting in a bi-layer of the 2D materials. A Raman based analysis has been used to test the morphology of the coating. The fiber deposited with 2D materials was later thermally poled and periodically erased via exposure to UV light to reach the QPM condition at a wavelength of ≈1550 nm. The effective 𝜒⁽²⁾ of the fiber was measured via SHG for both the deposited and the pristine fiber, showing an enhancement of the nonlinearity in favor of the deposited one. The phenomenon can be explained by the exploitation of a higher 𝜒⁽³⁾ seen by the pump wave due to the presence of the 2D layer deposited inside the cladding holes and opens the possibility of exploiting the higher intrinsic material 𝜒⁽²⁾, in case of a periodic patterning/synthesis of the TMDC.

Proceedings Article | 7 March 2019 Presentation + Paper

1.6-μm Er:YGG waveguide amplifiers

J. Mackenzie, S. Kurilchik, J. Prentice, J. Grant-Jacob, L. Carpenter, J. Gates, P. G. Smith, C. B. Gawith, H. Riris, A. Yu, R. Eason

Proceedings Volume 10896, 1089604 (2019) https://doi.org/10.1117/12.2513665

KEYWORDS: Waveguides, Absorption, Crystals, Channel waveguides, Optical amplifiers, Erbium, Laser ablation, Spectroscopy, Amplifiers

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Proceedings Article | 4 March 2019 Presentation

Modular linear optical circuits for quantum information processing (Conference Presentation)

James Gates, Paolo Mennea, William Clements, Devin Smith, Rex H. Bannerman, Jelmer Renema, William Kolthammer, Ian Walmsley, Peter G. Smith

Proceedings Volume 10933, 109330A (2019) https://doi.org/10.1117/12.2510301

KEYWORDS: Quantum information processing, Optical circuits, Integrated optics, Phase shifts, Waveguides, Ultraviolet radiation, Photonics, Silica, Interferometers, Thermal optics

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For over a decade the field of quantum photonics has increasingly looked towards optical integrated platforms to perform more complex and sophisticated experiments. Silica integrated optics is an ideal material for this area, offering low propagation and fibre-coupling losses. To date many of the key on-chip experiments have been carried out in this platform, using bespoke monolithic devices. In this work we propose an alternative approach, implementing a linear network constructed from a number of identical reconfigurable modules. The modules are measured separately to produce an accurate model of the overall network. The cellular nature also allows the replacement of modules that are faulty or substandard. Each module comprises of an array of 10 Mach-Zhender interferometers. Forty thermo-optic phase shifters on each chip allows the control of both the amplitude and phase of the optical field within the devices. By cascading the modules any arbitrary NxN unitary network can be realised. The optical waveguides within the modules are fabricated by direct UV writing, where a scanning focused UV laser beam increases the local refractive index within a photosensitive germanosilicate glass layer. The resulting channel waveguides are engineered to have dimensions that are mode matched to standard optical fibre producing excellent coupling efficiency. Bragg gratings can also be simultaneously produced within the waveguides which greatly assists in the precise characterisation of the phase shifters, coupling ratios and optical losses within the modules. We will present our recent work in this area, demonstrating devices operating at telecom wavelengths for quantum information processing. We present a modular reconfigurable system for on-chip quantum optics experiments with excellent fibre compatibility and low propagation losses, implemented using direct-UV-written silica-on-silicon. The performance of fabricated devices in various configurations is reported.

Proceedings Article | 27 February 2019 Presentation + Paper

SiO2-SnO2 transparent glass-ceramics activated by rare earth ions

Lidia Zur, Lam Thi Ngoc Tran, Damiano Massella, Alessandro Vaccari, Andrea Chiappini, Alessandro Chiasera, Stefano Varas, Cristina Armellini, Alessandro Carpentiero, Brigitte Boulard, Dominik Dorosz, Stefano Pelli, Cosimo Trono, Simone Berneschi, Gualtiero Nunzi Conti, James Gates, Pier-John Sazio, Barbara Rossi, Erica Iacob, Victor Micheli, Giorgio Speranza, Gloria Ischia, Francesco Prudenzano, Anna Lukowiak, Daniele Zonta, Roberta Ramponi, Giancarlo Righini, Maurizio Ferrari

Proceedings Volume 10914, 1091411 (2019) https://doi.org/10.1117/12.2507214

KEYWORDS: Rare earth doped glasses, Planar waveguides, Nanocrystals, Erbium, Crystals, Glasses, Photonics, Luminescence, Spectroscopy, Sol-gels

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Proceedings Article | 14 September 2018 Open Access

Taking large optical quantum states out of the lab: engaging pupils and the public on quantum photonics sciences

Matthew Posner, Paolo Mennea, Paul Gow, Rex H. Bannerman, Sam Berry, Devin Smith, James Gates, Peter G. Smith

Proceedings Volume 10741, 107410D (2018) https://doi.org/10.1117/12.2319391

KEYWORDS: Outreach programs, Optics education, Engineering education, Photonics, Semiconducting wafers, Optical engineering, Quantum optics, Optical lithography, Quantum information, Photonic integrated circuits

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Proceedings Article | 14 September 2018 Open Access

Taking quantum entanglement out of the lab

Paul Gow, James Gates, Rex H. Bannerman, Joshua Nunn, Matthew Posner, Paolo Mennea, Peter G. Smith

Proceedings Volume 10741, 107410M (2018) https://doi.org/10.1117/12.2321079

KEYWORDS: Photons, Photonics, Quantum information, Software development, Quantum computing, Optical engineering, Single photon

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Proceedings Article | 14 March 2018 Presentation

Direct UV-written integrated waveguides using 213nm light (Conference Presentation)

Paul Gow, Rex H. Bannerman, James Gates, Christopher Holmes, Peter G. Smith

Proceedings Volume 10535, 105350M (2018) https://doi.org/10.1117/12.2289592

KEYWORDS: Ultraviolet radiation, Waveguides, Fiber Bragg gratings, Silica, Planar waveguides, Deep ultraviolet, Hydrogen, Refractive index, Semiconducting wafers, Integrated photonics

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Proceedings Article | 17 April 2015 Paper

Planarized fiber-FHD optical composite

C. Holmes, L. Carpenter, J. Gates, C. B. Gawith, P. G. Smith

Proceedings Volume 9369, 936907 (2015) https://doi.org/10.1117/12.2079481

KEYWORDS: Composites, Silica, Optical fibers, Cladding, Refractive index, Fiber Bragg gratings, Micromachining, Planar waveguides, Glasses, Silicon

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Proceedings Article | 10 March 2015 Paper

Thermally tunable integrated planar Bragg-grating stabilized diode laser

S. Lynch, J. Gates, S. Berry, C. Holmes, P. G. Smith

Proceedings Volume 9382, 93820O (2015) https://doi.org/10.1117/12.2080256

KEYWORDS: Fiber Bragg gratings, Semiconductor lasers, Waveguides, Glasses, Laser stabilization, Photonic integrated circuits, Modulation, Planar waveguides, Reflectors, Semiconducting wafers

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Proceedings Article | 8 February 2015 Paper

Fabrication of silica integrated waveguide circuits for quantum enhanced sensing, quantum information processing and number resolving detection

Peter G. Smith, James Gates, Christopher Holmes, Corin B. Gawith, Lewis Carpenter, Paolo Mennea, Matthew Posner, Peter Cooper, Stephen Lynch

Proceedings Volume 9370, 93701K (2015) https://doi.org/10.1117/12.2082790

KEYWORDS: Waveguides, Quantum information processing, Silicon, Quantum information, Ultraviolet radiation, Glasses, Sensors, Silica, Fiber Bragg gratings, Planar waveguides

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Proceedings Article | 8 March 2014 Paper

Precision dicing of optical materials

L. Carpenter, C. Holmes, P. Cooper, J. Gates, P. G. Smith

Proceedings Volume 8988, 898813 (2014) https://doi.org/10.1117/12.2039754

KEYWORDS: Surface roughness, YAG lasers, Germanium, Lithium niobate, Silicon, Metrology, Microscopes, Silica, Interferometers, Diamond machining

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Proceedings Article | 7 March 2014 Paper

Optomechanical cantilever device for displacement sensing and variable attenuator

Peter Cooper, Lewis Carpenter, Paolo Mennea, Christopher Holmes, James Gates, Peter G. Smith

Proceedings Volume 8974, 897413 (2014) https://doi.org/10.1117/12.2039806

KEYWORDS: Waveguides, Silicon, Attenuators, Etching, Sensors, Glasses, Fiber Bragg gratings, Reflectivity, Refractive index, Visualization

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Proceedings Article | 7 March 2014 Paper

Flexible glass flat-fibre chips and femtosecond laser inscription as enabling technologies for photonic devices

Christos Riziotis, Kyriacos Kalli, Christos Markos, Andreas Posporis, Charalambos Koutsides, Andrew Webb, Christopher Holmes, James Gates, Jayanta Sahu, Peter G. Smith

Proceedings Volume 8982, 89820G (2014) https://doi.org/10.1117/12.2039643

KEYWORDS: Resonators, Microfluidics, Femtosecond phenomena, Fiber Bragg gratings, Structured optical fibers, Glasses, Polishing, Mach-Zehnder interferometers, Integrated optics, Optical fibers

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Proceedings Article | 6 March 2014 Paper

Fabricating fiber Bragg gratings using phase modulated direct UV writing

C. Holmes, C. Sima, P. Mennea, L. Carpenter, J. Gates, P. G. Smith

Proceedings Volume 8968, 896808 (2014) https://doi.org/10.1117/12.2040578

KEYWORDS: Ultraviolet radiation, Fiber Bragg gratings, Waveguides, Interferometry, Optical alignment, Optical design, Modulation, Thermal effects, Birefringence, Femtosecond phenomena

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Proceedings Article | 27 February 2014 Paper

Bragg-grating-stabilized external cavity lasers for gas sensing using tunable diode laser spectroscopy

S. G. Lynch, F. Chen, J. Gates, C. Holmes, S. Staines, S. James, J. Hodgkinson, P. Smith, R. Tatam

Proceedings Volume 9002, 900209 (2014) https://doi.org/10.1117/12.2039971

KEYWORDS: Fiber Bragg gratings, Semiconductor lasers, Tunable lasers, Laser stabilization, Absorption, Optical fibers, Gas lasers, Fiber lasers, Laser spectroscopy, Spectroscopy

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Proceedings Article | 15 October 2013 Paper

Femtosecond laser inscription and micromachining in novel flexible glass flat-fibre chips

K. Kalli, C. Markos, A. Posporis, C. Koutsides, C. Riziotis, A. Webb, J. Sahu, C. Holmes, J. Gates, P. G. Smith

Proceedings Volume 8924, 89240Z (2013) https://doi.org/10.1117/12.2035403

KEYWORDS: Resonators, Femtosecond phenomena, Microfluidics, Fiber Bragg gratings, Micromachining, Glasses, Structured optical fibers, Optical fibers, 3D image processing, Polishing

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Proceedings Article | 15 March 2013 Paper

MEMS accelerometers utilizing resonant microcantilevers with interrogated single-mode waveguides and Bragg gratings

L. Carpenter, C. Holmes, J. Gates, P. G. Smith

Proceedings Volume 8614, 86140K (2013) https://doi.org/10.1117/12.2004418

KEYWORDS: Fiber Bragg gratings, Waveguides, Interferometers, Optical amplifiers, Silica, Glasses, Microelectromechanical systems, Transducers, Polarization, Integrated optics

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Proceedings Article | 11 March 2013 Paper

Polish-like facet preparation via dicing for silica integrated optics

L. Carpenter, H. Rogers, C. Holmes, J. Gates, P. G. Smith

Proceedings Volume 8621, 862107 (2013) https://doi.org/10.1117/12.2004342

KEYWORDS: Surface roughness, Silica, Diamond, Diamond machining, Glasses, Silicon, Ultraviolet radiation, Integrated optics, Nickel, Metrology

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Proceedings Article | 6 March 2013 Paper

Phase modulated direct UV grating writing technique for ultra-wide spectrum planar Bragg grating fabrication

Chaotan Sima, James Gates, Helen Rogers, Paolo Mennea, Christopher Holmes, Michalis Zervas, Peter G. Smith

Proceedings Volume 8627, 86270T (2013) https://doi.org/10.1117/12.2001834

KEYWORDS: Fiber Bragg gratings, Ultraviolet radiation, Fabrication, Modulation, Refractive index, Reflectivity, Phase shift keying, Waveguides, Data modeling, Phase shifts

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Proceedings Article | 6 March 2013 Paper

Tilted Bragg grating based optical components within an integrated planar platform

Helen Rogers, Christopher Holmes, Keith Daly, Lewis Carpenter, James Gates, Giampaolo D'Alessandro, Peter G. Smith

Proceedings Volume 8627, 86270S (2013) https://doi.org/10.1117/12.2002448

KEYWORDS: Waveguides, Fiber Bragg gratings, Polarization, Refractive index, Wave propagation, Ultraviolet radiation, Optical components, Integrated optics, Surface plasmons, Cladding

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SPIE Journal Paper | 1 April 2010

Strain tuning of a composite silica-on-silicon direct ultraviolet written planar Bragg grating

Christopher Holmes, James Gates, Corin Gawith, Peter Smith

OE, Vol. 49, Issue 04, 044601, (April 2010) https://doi.org/10.1117/12.10.1117/1.3394001

KEYWORDS: Fiber Bragg gratings, Composites, Ultraviolet radiation, Silica, Silicon, Optical filters, Waveguides, Polarization, Optical engineering, Optical networks

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Proceedings Article | 31 May 2007 Paper

Flat fiber: the flexible format for distributed lab-on-a-chip

Corin B. Gawith, Andrew Webb, Robert Standish, Jayanta Sahu, F. Rafiq Adikan, James Gates, Peter G. Smith

Proceedings Volume 6585, 658508 (2007) https://doi.org/10.1117/12.722873

KEYWORDS: Channel waveguides, Fiber Bragg gratings, Integrated optics, Ultraviolet radiation, Refractive index, Lab on a chip, Photonic integrated circuits, Optical fibers, Waveguides, Birefringence

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Proceedings Article | 16 May 2007 Paper

New geometry for planar UV written refractive index sensors

James Gates, Christopher Holmes, F. Rafiq Adikan, Corin B. Gawith, Peter G. Smith

Proceedings Volume 6585, 65850O (2007) https://doi.org/10.1117/12.722871

KEYWORDS: Sensors, Waveguides, Ultraviolet radiation, Refractive index, Fiber Bragg gratings, Birefringence, Etching, Polarization, Planar waveguides, Cladding

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Proceedings Article | 9 May 2007 Paper

100GHz electrically tunable planar Bragg grating via nematic liquid crystal overlay for reconfigurable WDM networks.

Faisal Rafiq Mahamd Adikan, James Gates, Andriy Dyadyashu, Huw Major, Corin Gawith, Malgosia Kaczmarek, Ian Sparrow, Peter Smith

Proceedings Volume 6587, 65870H (2007) https://doi.org/10.1117/12.722883

KEYWORDS: Liquid crystals, Waveguides, Fiber Bragg gratings, Electrodes, Glasses, Ultraviolet radiation, Refractive index, LCDs, Infrared cameras, Wavelength division multiplexing networks

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Showing 5 of 38 publications

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