Coherence and Noise Properties of Gain-Switched Fabry-Perot Semiconductor-Lasers

Griffin, R.A. and Jackson, David A. and Sampson, David D. (1995) Coherence and Noise Properties of Gain-Switched Fabry-Perot Semiconductor-Lasers. IEEE Journal of Selected Topics in Quantum Electronics, 1 (2). pp. 569-576. ISSN 1077-260X. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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We present a detailed study of the optical power spectrum and coherence properties of Fabry-Perot semiconductor lasers under gain-switched operation. We demonstrate that the distribution of longitudinal modes under gain-switched operation is described to high accuracy by a Gaussian envelope, in contrast to continuous wave (CW) lasers where the distribution is Lorentzian. We show that the minimum values of coherence under gain-switched operation are two orders of magnitude lower than under CW operation. We also demonstrate that intensity noise generated through interferometric conversion of mode partition noise is markedly different for gain-switched and CW lasers. The results are important for a host of potential applications that use low-coherence interferometry.

Item Type: Article
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculties > Science Technology and Medical Studies > School of Engineering and Digital Arts
Depositing User: P. Ogbuji
Date Deposited: 01 Jun 2009 08:27
Last Modified: 17 Jul 2014 11:38
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