Frequency-difference stabilization of distributed-feedback laser diodes by use of an optical frequency translation circuit

Kaoru Shimizu, Tsuneo Horiguchi, Yahei Koyamada

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A demonstration of frequency-difference stabilization over a 100-GHz range for two distributed-feedback laser diodes (LD's) by utilizing a loss-compensated optical loop with a frequency shifter is given. Emitted from a master distributed-feedback LD, a light wave is modulated into a pulse. Around the optical loop to shift its frequency to the difference required between the master and slave distributed-feedback LD's, the pulse is then circulated. With the frequency-shifted pulse, a continuous-wave pulse from the slave LD is mixed, and with a conventional low-speed heterodyne receiver, their beat frequency is measured.

Original languageEnglish
Pages (from-to)1819-1821
Number of pages3
JournalOptics Letters
Issue number21
Publication statusPublished - 1993 Nov 1
Externally publishedYes


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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