Distributed feedback lasers with distributed phase-shift structure

Distributed feedback (DFB) lasers with distributed phase-shift (DPS) structures are suggested for reducing the spatial hole burning in conventional phase-shifted DFB lasers. Solving the coupled-mode equations subject to suitable boundary conditions, we have determined the threshold gain condition of...

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Bibliographic Details
Published inApplied physics letters Vol. 60; no. 21; pp. 2586 - 2588
Main Authors Chen, G., Seshadri, S. R., Cerrina, F.
Format Journal Article
LanguageEnglish
Published Melville, NY American Institute of Physics 25.05.1992
Subjects
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Lasers
Optics
Physics
Semiconductor lasers; laser diodes
Reduction
Distributed feedback laser
Hole burning
Semiconductor laser
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Summary:Distributed feedback (DFB) lasers with distributed phase-shift (DPS) structures are suggested for reducing the spatial hole burning in conventional phase-shifted DFB lasers. Solving the coupled-mode equations subject to suitable boundary conditions, we have determined the threshold gain condition of a symmetric distributed phase-shift distributed feedback (DPSDFB) laser as well as the internal photon intensity distribution. The results show that by distributing the phase shift to a greater extent, the spatial hole burning can be reduced significantly and a large threshold gain difference between lowest gain oscillation modes can be maintained over a large phase-shift range. Moreover, a properly designed DPSDFB laser does not pose extra requirements on its fabrication.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0003-6951
1077-3118
DOI:10.1063/1.106917