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Proceedings Paper

Wavelength tunable 4-element laser array
Author(s): Toshiyuki Ohishi; Hitoshi Watanabe; Masao Kawano; Akira Takemoto; Yasuo Nakajima; Etsuji Omura; Masao Aiga; Kenji Ikeda
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Paper Abstract

A wavelength tunable 4-element laser array is fabricated with high performances suitable for the frequency division multiplexing (FDM) system. The array consists of four 1 .55 j.m DFB(distributed feedback) PPIBH (p-substrate partially inverted buried heterostructure) lasers with beam spacing of 125 jim. The lasing wavelength is tuned by changing the ratio of input currents to the two electrodes. The lasing frequency of the array can be allocated with a frequency interval of 10 GHz. An FM efficiency as large as 1 GHz/mA and a flat FM response with variation less than 3 dB in the modulation frequency range from 20 kHz to 1 GHz have been realized. An electrical crosstalk is less than -30 dB up to 800 MHz.

Paper Details

Date Published: 26 June 1992
PDF: 8 pages
Proc. SPIE 1634, Laser Diode Technology and Applications IV, (26 June 1992); doi: 10.1117/12.59144
Show Author Affiliations
Toshiyuki Ohishi, Mitsubishi Electric Corp. (Japan)
Hitoshi Watanabe, Mitsubishi Electric Corp. (Japan)
Masao Kawano, Mitsubishi Electric Corp. (Japan)
Akira Takemoto, Mitsubishi Electric Corp. (Japan)
Yasuo Nakajima, Mitsubishi Electric Corp. (Japan)
Etsuji Omura, Mitsubishi Electric Corp. (Japan)
Masao Aiga, Mitsubishi Electric Corp. (Japan)
Kenji Ikeda, Mitsubishi Electric Corp. (Japan)

Published in SPIE Proceedings Vol. 1634:
Laser Diode Technology and Applications IV
Daniel S. Renner, Editor(s)

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