Share Email Print

Proceedings Paper

Wideband and high-efficiency AlInAs/GaInAs waveguide photodetectors for 40-Gbps receivers
Author(s): Toshitaka Torikai; Takeshi Nakata; Takeshi Takeuchi; Kikuo Makita
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Two types of waveguide photodiodes (WG-PD) - an evanescently coupled photodiode (EC-WG-PD) and a separated-absorption-and-multiplication avalanche photodiode (SAM-WG-APD) - have been developed for use in 40-Gbps receivers. The EC-PD is much more robust than a conventional WG-PD under high optical input operation because of its distributed absorbed optical power density along the light propagation in the waveguide. The EC-WG-PD simultaneously exhibited a high external responsivity of 0.96 A/W, a wide bandwidth of >40 GHz, and as high as 10-mA photocurrent operation. On the other hand, the SAM-WG-APD has a wide bandwidth of 30-35 GHz and a gain-bandwidth product of 140-180 GHz as a result of its small waveguide mesa structure and a thin multiplication layer. Record highest receiver sensitivities of -28.8 dBm at 10 Gbps and -19.6 dBm at 40 Gbps have been achieved for the first time.

Paper Details

Date Published: 11 July 2002
PDF: 12 pages
Proc. SPIE 4870, Active and Passive Optical Components for WDM Communications II, (11 July 2002); doi: 10.1117/12.475569
Show Author Affiliations
Toshitaka Torikai, NEC Corp. (Japan)
Takeshi Nakata, NEC Corp. (Japan)
Takeshi Takeuchi, NEC Corp. (Japan)
Kikuo Makita, NEC Corp. (Japan)

Published in SPIE Proceedings Vol. 4870:
Active and Passive Optical Components for WDM Communications II
Achyut Kumar Dutta; Abdul Ahad Sami Awwal; Niloy K. Dutta; Katsunari Okamoto, Editor(s)

© SPIE. Terms of Use
Back to Top