Compact-footprint focusing lithographically scribed planar holographic Bragg reflector

Christoph Greiner; Dmitri Iazikov; Thomas W. Mossberg

doi:10.1117/12.517123

20 October 2003 Compact-footprint focusing lithographically scribed planar holographic Bragg reflector

Christoph Greiner, Dmitri Iazikov, Thomas W. Mossberg

Proceedings Volume 5225, Nano- and Micro-Optics for Information Systems; (2003) https://doi.org/10.1117/12.517123
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

Planar holographic Bragg reflectors (HBR’s) are slab-waveguide-based computer-generated two-dimensional in-plane refractive-index holograms. The slab waveguide allows signals to propagate freely in two dimensions, a geometry that enables HBR’s to offer powerful holographic function in the form of simultaneous spectral and spatial signal processing in a single element. Owing to their planar structure HBR’s are fully consistent with photolithographic fabrication which provides complete amplitude and phase control over individual diffractive elements thus providing a flexible means to precisely engineer device spectral transfer functions. Here, we report on a photolithographically-fabricated silica-on-silicon slab-waveguide-based HBR that provides 17 GHz, essentially Fourier-transform limited, spectral resolution in a device footprint of only 0.3 cm² . The device maps the input beam to a spatially distinct output with diffraction-limited performance. Our results conclusively establish that the silica-on-silicon format and submicron photolithography can provide fully coherent planar holographic structures of centimeter scale.

Citation Download Citation

Christoph Greiner, Dmitri Iazikov, and Thomas W. Mossberg "Compact-footprint focusing lithographically scribed planar holographic Bragg reflector", Proc. SPIE 5225, Nano- and Micro-Optics for Information Systems, (20 October 2003); https://doi.org/10.1117/12.517123

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