A Control Loop Which Ensures High Side-Mode-Suppression Ratio in a Tunable DBR Laser

S. L. Woodward; T. L. Koch; U. Koren

doi:10.1109/68.136471

A Control Loop Which Ensures High Side-Mode-Suppression Ratio in a Tunable DBR Laser

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

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

We 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 language	English (US)
Pages (from-to)	417-419
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	4
Issue number	5
DOIs	https://doi.org/10.1109/68.136471
State	Published - May 1992
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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10.1109/68.136471

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abstract = "We 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.",

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N2 - We 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.

AB - We 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.

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A Control Loop Which Ensures High Side-Mode-Suppression Ratio in a Tunable DBR Laser

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ASJC Scopus subject areas

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