Design and fabrication of dual-transmission-band fiber Bragg grating with terahertz wavelength spacing

Jianguan Tang; Junqiang Sun

doi:10.1117/12.867214

22 October 2010 Design and fabrication of dual-transmission-band fiber Bragg grating with terahertz wavelength spacing

Jianguan Tang, Junqiang Sun

Proceedings Volume 7657, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Micro- and Nano-Optical Devices and Systems; 76570I (2010) https://doi.org/10.1117/12.867214
Event: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2010, Dalian, China

Abstract

Phase-shifted chirped fiber Bragg grating (PS-CFBG) with dual π phase shifts was studied theoretically and designed by classic transfer matrix approach. The transmission characteristics of the PS-CFBG with two transmission peaks are only directly dependent on the position of dual π phase shifts. The linewidth of two peaks increase with the chirp rate of the grating, and is not related with the wavelength difference of the peaks. A dual PS-CFBG was fabricated by ultraviolet point-by-point scanning with a ~2.4 nm/cm chirped phase mask. Phase shifts were introduced by controlling half period movement of grating accurately through the piezoelectric ceramic (PZT). The wavelength spacing, extinction ratio, and 3dB linewidth of two transmission peaks are 8nm, 20 dB and 0.08 nm, respectively, which agree with the theoretical design.

Citation Download Citation

Jianguan Tang and Junqiang Sun "Design and fabrication of dual-transmission-band fiber Bragg grating with terahertz wavelength spacing", Proc. SPIE 7657, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Micro- and Nano-Optical Devices and Systems, 76570I (22 October 2010); https://doi.org/10.1117/12.867214

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KEYWORDS

Phase shifts

Fiber Bragg gratings

Modulation

Optical design

Terahertz radiation

Phase shift keying

Ultraviolet radiation

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