A control loop which ensures high side-mode-suppression ratio in a tunable DBR laser

S. L. Woodward, Thomas L Koch, U. Koren

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The authors present a control loop which ensures single-mode operation of a tunable distributed-Bragg-reflector (DBR) laser. This control loop uses no external optics. The error signal is derived from an integrated detector which measures the light transmitted through the Bragg section. Using this signal to control the current to the Bragg section, the laser is tuned to where the side-mode-suppression ratio is high. This guarantees that the laser will remain single-mode, even when modulated. This servo will find application in wavelength-division-multiplexed (WDM) systems.

Original languageEnglish (US)
Pages (from-to)417-419
Number of pages3
JournalIEEE Photonics Technology Letters
Volume4
Issue number5
DOIs
StatePublished - May 1992
Externally publishedYes

Fingerprint

DBR lasers
Laser modes
tunable lasers
retarding
error signals
Lasers
division
lasers
Optics
optics
Detectors
Wavelength
detectors
wavelengths

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)
  • Atomic and Molecular Physics, and Optics

Cite this

A control loop which ensures high side-mode-suppression ratio in a tunable DBR laser. / Woodward, S. L.; Koch, Thomas L; Koren, U.

In: IEEE Photonics Technology Letters, Vol. 4, No. 5, 05.1992, p. 417-419.

Research output: Contribution to journalArticle

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