Add/drop wavelength multiplexer using fiber gratings and side-polished coupler

Nathalie Cerre; Edouard M. Taufflieb; D. Joulin; Philippe Martin; Herve C. Lefevre

doi:10.1117/12.258986

20 November 1996 Add/drop wavelength multiplexer using fiber gratings and side-polished coupler

Nathalie Cerre, Edouard M. Taufflieb, D. Joulin, Philippe Martin, Herve C. Lefevre

Proceedings Volume 2841, Doped Fiber Devices; (1996) https://doi.org/10.1117/12.258986
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

We present results of the manufacturing of ADD/DROP wavelength multiplexers, which combine an in-fiber Bragg grating written on one fiber in the middle of a polished coupler. When a fiber Bragg grating is written on one of the two fibers, and located in the middle of a 100 percent coupler, coupling is 'frustrated' at the Bragg wavelength while 100 percent coupling still occurs at other wavelengths. This performs an ADD/DROP wavelength multiplexer function, which is very useful for WDM telecommunications networks. Modeling of the device indicates that good performance needs a long interaction length with a strong grating, and predicts an attractive insertion loss with a selectivity of about 10 dB. Using the side-polishing technique, manufacturing of several devices indicates a good efficiency of the frustration effect but some transmission at wavelengths other than the Bragg wavelength. Results are in good agreement with the model. Insertion losses are within 1 dB. The selectivity spectrum shows an asymmetrical shape which is explained when considering the phaser matching and its wavelength dependence due to the grating.

Citation Download Citation

Nathalie Cerre, Edouard M. Taufflieb, D. Joulin, Philippe Martin, and Herve C. Lefevre "Add/drop wavelength multiplexer using fiber gratings and side-polished coupler", Proc. SPIE 2841, Doped Fiber Devices, (20 November 1996); https://doi.org/10.1117/12.258986

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