Control of optical-feedback-induced laser intensity noise in optical data recording

George R. Gray; Andrew T. Ryan; Govind P. Agrawal; Edward C. Gage

doi:10.1117/12.130137

1 April 1993 Control of optical-feedback-induced laser intensity noise in optical data recording

George R. Gray, Andrew T. Ryan, Govind P. Agrawal, Edward C. Gage

Author Affiliations +

Optical Engineering, Vol. 32, Issue 4, (April 1993). https://doi.org/10.1117/12.130137

Abstract

The usefulness of semiconductor lasers can be greatly limited when the laser is subjected to uncontrolled optical feedback (OFB). In particular, the laser intensity noise can be severely degraded when OFB is greater than 0.1%. Although the technique of high-frequency injection (HFI) can solve this problem, the proper modulation frequency and depth must be chosen empirically. We investigate this problem through cornputer simulations of the multimode stochastic rate equations, modified to include OFB and HFI. By providing the program with measurable laser and system parameters, the simulations predict the HFI modulation frequency and depth that optimize the laser behavior. The results of the simulations are compared with experiment, and good agreement is obtained.

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George R. Gray, Andrew T. Ryan, Govind P. Agrawal, and Edward C. Gage "Control of optical-feedback-induced laser intensity noise in optical data recording," Optical Engineering 32(4), (1 April 1993). https://doi.org/10.1117/12.130137

Published: 1 April 1993

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