High performance and highly reliable λ/4 shifted MQW-DFB-DC-PBH-LDs for Gb/s coherent optical communication systems

Author

Kitamura, Mitsuhiro ; Yamazaki, Hiroyuki ; Yamada, Hirohito ; Takano, Shinji ; Kosuge, Kazuhiro ; Sugiyama, Yuko ; Yamaguchi, Masayuki ; Mito, Ikuo

Author_Institution

NEC Corp., Kawasaki, Japan

Volume

29

Issue

6

fYear

1993

fDate

6/1/1993 12:00:00 AM

Firstpage

1728

Lastpage

1735

Abstract

The authors demonstrate high-performance and highly reliable single-frequency quarter-wave (λ/4)-shifted multiple-quantum-well distributed-feedback laser diodes with double-channel planar buried heterostructure (MQW-DFB-DC-PBH LDs). Superior characteristics, such as narrow spectral linewidth (about 1 MHz) and flat FM response (several GHz bandwidth with less than 50-kHz dip frequency) at high light output power, have been obtained with small values of coupling coefficient and cavity length product (κL), and thick separate-confinement-heterostructure (SCH) layers. An estimated lifetime in terms of spectral linewidth, FM response, and lasing wavelength of over 10⁵ has been obtained, demonstrating that these devices are suitable for practical use in gigabit/second coherent optical fiber communication systems

Keywords

distributed feedback lasers; optical communication equipment; semiconductor lasers; cavity length product; coherent optical fiber communication systems; coupling coefficient; double-channel planar buried heterostructure; frequency modulation response; high-performance; lasing wavelength; light output power; multiple-quantum-well distributed-feedback laser diodes; single frequency quarter wave shifted laser diodes; spectral linewidth; Distributed feedback devices; Frequency modulation; Frequency shift keying; Gratings; Light sources; National electric code; Optical device fabrication; Optical fiber communication; Optical receivers; Quantum well devices;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.234428

Filename

234428