High extinction ratio operation at 40-Gb/s direct modulation in 1.3-/spl mu/m InGaAlAs-MQW RWG DFB lasers

K. Nakahara,T. Tsuchiya,Takeshi Kitatani,Kazunori Shinoda,Takafumi Taniguchi,Takeshi Kikawa,Masahiro Aoki,Masaru Mukaikubo

High extinction ratio operation at 40-Gb/s direct modulation in 1.3-/spl mu/m InGaAlAs-MQW RWG DFB lasers

2006

K. Nakahara
T. Tsuchiya
Takeshi Kitatani
Kazunori Shinoda
Takafumi Taniguchi
Takeshi Kikawa
Masahiro Aoki
Masaru Mukaikubo

Direct modulation of 1.3-/spl mu/m InGaAlAs DFB RWG lasers at 40 Gb/s is experimentally demonstrated. This laser achieves a record extinction ratio of 5 dB under 40-Gb/s modulation. Moreover, it can provide 40-Gb/s modulated transmission over 2 km.

Keywords:

Fiber laser
Extinction ratio
Laser
Gallium arsenide
Modulation
Electronic engineering
Semiconductor laser theory
Optics
Engineering
bit rate
optical materials
Optoelectronics

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