Title :
Dual Evanescently Coupled Waveguide Photodiodes for Ultra-high Bit Rate DPSK/DQPSK systems
Author :
Watanabe, Sawaki ; Shiba, Kazuhiro ; Okamoto, Takeshi ; Chikuma, Tadayuki ; Makita, Kikuo
Author_Institution :
NEC Corp., Shiga
Abstract :
We have developed monolithically integrated dual evanescently coupled waveguide photodiodes (EC-WG- PDs) for ultra-high bit rate DPSK/DQPSK systems. The characteristics of each PD are equivalent with 3 dB bandwidth of over 40 GHz and external quantum efficiency of 0.85 A/W.
Keywords :
differential phase shift keying; integrated optoelectronics; optical communication equipment; optical couplers; optical waveguides; photodiodes; quadrature phase shift keying; differential phase shift keying; differential quadrature phase shift keying; external quantum efficiency; monolithically integrated dual evanescently coupled waveguide photodiodes; ultrahigh bit rate DPSK-DQPSK systems; Bit rate; Differential quadrature phase shift keying; Photodiodes;
Conference_Titel :
Lasers and Electro-Optics Society, 2007. LEOS 2007. The 20th Annual Meeting of the IEEE
Conference_Location :
Lake Buena Vista, FL
Print_ISBN :
978-1-4244-0925-9
Electronic_ISBN :
1092-8081
DOI :
10.1109/LEOS.2007.4382441
