Novel wavelength-tunable active-filter-type laser diodes

Masayoshi Horita, Katsuyuki Utaka, Yuichi Matsushima

Research output: Contribution to journalArticle

2 Citations (Scopus)


A wavelength-tunable laser diode which utilizes an active transmission filter of a λ/4-shifted grating is proposed. 0.95-nm continuous tuning and 5.2-nm quasi-continuous tuning were achieved. Spectral linewidths ranged from 20 to 40 MHz during the tuning. The device structure and the operational principle are described. After a description of the fabrication, the device characteristics, including injection current versus light output, wavelength tuning, linewidth, and FM response, are presented. A flat FM response with large efficiency was obtained.

Original languageEnglish
Pages (from-to)1625-1629
Number of pages5
JournalIEEE Journal of Quantum Electronics
Issue number6
Publication statusPublished - 1991 Jun
Externally publishedYes


ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

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