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Optics Letters

Optics Letters


  • Vol. 30, Iss. 8 — Apr. 15, 2005
  • pp: 860–862

Intensity-modulating characteristics of a laser diode subjected to optical injection

Xiangzhao Wang, Yingming Liu, Hongbin Lu, Xuefeng Wang, and Zujie Fang  »View Author Affiliations

Optics Letters, Vol. 30, Issue 8, pp. 860-862 (2005)

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We have found that the optical power of a laser diode (LD) does not change with the injected light intensity that is modulated when its injection current is at some specific values. The amplitude of optical power change of the LD varies periodically with the increase of the injection current. It is made clear through theoretical analysis that these phenomena are caused by gain compression and interband carrier absorption of the LD that depend on longitudinal mode competition, bandgap-shrinkage effects, thermal conduction, and so on. Our experimental results make it easy to eliminate optical power change of LDs. We only need to choose a proper value of the injection current.

© 2005 Optical Society of America

OCIS Codes
(060.2630) Fiber optics and optical communications : Frequency modulation
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(140.2020) Lasers and laser optics : Diode lasers

Xiangzhao Wang, Yingming Liu, Hongbin Lu, Xuefeng Wang, and Zujie Fang, "Intensity-modulating characteristics of a laser diode subjected to optical injection," Opt. Lett. 30, 860-862 (2005)

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