A robust 40-Gb/s evanescently coupled waveguide photodiode with high efficiency for use in dual wavelengths: 1310 and 1550-nm

Kazuhiro Shiba; Takeshi Takeuchi; Takeshi Nakata; Kikuo Makita; Kimiyoshi Fukatsu; Tomoaki Kato; Toshitaka Torikai

doi:10.1117/12.520381

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12 May 2004 Robust 40-Gb/s evanescently coupled waveguide photodiode with high efficiency for use in dual wavelengths: 1310 and 1550-nm

Kazuhiro Shiba, Takeshi Takeuchi, Takeshi Nakata, Kikuo Makita, Kimiyoshi Fukatsu, Tomoaki Kato, Toshitaka Torikai

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Proceedings Volume 5280, Materials, Active Devices, and Optical Amplifiers; (2004) https://doi.org/10.1117/12.520381
Event: Asia-Pacific Optical and Wireless Communications, 2003, Wuhan, China

Abstract

An evanescently coupled waveguide photodiode (EC-WG-PD) for both 1310-nm and 1550-nm wavelength bands has been developed for use in long-haul and high capacity very-short-reach (VSR) transmission systems. The EC-WG-PD is much more robust than a conventional waveguide photodiode (WG-PD) under high optical input operation because its absorbed optical power density is distributed along the light propagation in the waveguide. High external quantum efficiency of 65% for 1310 nm and 74% for 1550 nm, and a high 3-dB-down bandwidth of 41 GHz were demonstrated. No significant degradation of the frequency response was observed up to an average photocurrent of 10 mA. Moreover, a clear receiving eye-waveform was obtained at 40 Gb/s for an implemented single-output receiver module.

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Kazuhiro Shiba, Takeshi Takeuchi, Takeshi Nakata, Kikuo Makita, Kimiyoshi Fukatsu, Tomoaki Kato, and Toshitaka Torikai "Robust 40-Gb/s evanescently coupled waveguide photodiode with high efficiency for use in dual wavelengths: 1310 and 1550-nm", Proc. SPIE 5280, Materials, Active Devices, and Optical Amplifiers, (12 May 2004); https://doi.org/10.1117/12.520381

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