Novel 0.98/1.55-um dichroic coupler based on lithium niobate

Chi-Yu Wang; Hung-Hui Shih; Szu-Chun Wang; Hung-Pin Shiao; Yuan-Kuang Tu

doi:10.1117/12.131239

23 October 1992 Novel 0.98/1.55-um dichroic coupler based on lithium niobate

Chi-Yu Wang, Hung-Hui Shih, Szu-Chun Wang, Hung-Pin Shiao, Yuan-Kuang Tu

Proceedings Volume 1813, Optoelectronic Component Technologies; (1992) https://doi.org/10.1117/12.131239
Event: International Symposium on Optoelectronics in Computers, Communications, and Control, 1992, Hsinchu, Taiwan

Abstract

A novel 0.98/1.55 micrometers dichroic coupler with high extinction ratio and low insertion loss has been designed and implemented on LiNbO₃ for Erbium-doped fiber amplifier applications. The design of dichroic coupler is based on a modified directional coupler structure with a single bend in each channel. Beam propagation method is used to analyze the coupler performance to get the optimal parameters for device design, such as channel width, titanium thickness, channel gap, and interaction length. Samples with the signal coupling ratio as high as 100% and pumping power ratio as high as 95% have been obtained.

Citation Download Citation

Chi-Yu Wang, Hung-Hui Shih, Szu-Chun Wang, Hung-Pin Shiao, and Yuan-Kuang Tu "Novel 0.98/1.55-um dichroic coupler based on lithium niobate", Proc. SPIE 1813, Optoelectronic Component Technologies, (23 October 1992); https://doi.org/10.1117/12.131239

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