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Proceedings Paper

A robust 40-Gb/s evanescently coupled waveguide photodiode with high efficiency for use in dual wavelengths: 1310 and 1550-nm
Author(s): Kazuhiro Shiba; Takeshi Takeuchi; Takeshi Nakata; Kikuo Makita; Kimiyoshi Fukatsu; Tomoaki Kato; Toshitaka Torikai
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Paper 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.

Paper Details

Date Published: 12 May 2004
PDF: 6 pages
Proc. SPIE 5280, Materials, Active Devices, and Optical Amplifiers, (12 May 2004); doi: 10.1117/12.520381
Show Author Affiliations
Kazuhiro Shiba, NEC Corp. (Japan)
Takeshi Takeuchi, NEC Corp. (Japan)
Takeshi Nakata, NEC Corp. (Japan)
Kikuo Makita, NEC Corp. (Japan)
Kimiyoshi Fukatsu, NEC Corp. (Japan)
Tomoaki Kato, NEC Corp. (Japan)
Toshitaka Torikai, NEC Corp. (Japan)


Published in SPIE Proceedings Vol. 5280:
Materials, Active Devices, and Optical Amplifiers
Connie J. Chang-Hasnain; Dexiu Huang; Yoshiaki Nakano; Xiaomin Ren, Editor(s)

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