Corrugation-pitch modulated MQW-DFB lasers with narrow spectral linewidth

Corrugation-pitch modulated MQW-DFB lasers with narrow spectral linewidth

Narrow spectral linewidth lasers are developed for optical coherent transmission systems. To obtain a narrow spectral linewidth, a CPM (corrugation-pitch modulated) structure is introduced into 1200- mu m-long MQW-DFB (multi-quantum well distributed feedback) lasers. The CPM structure effectively su...

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Veröffentlicht in:IEEE journal of quantum electronics 1991-06, Vol.27 (6), p.1767-1772
Hauptverfasser: Okai, M., Tsuchiya, T., Uomi, K., Chinone, N., Harada, T.
Format: Artikel
Sprache:eng
Schlagworte:
Distributed feedback devices
Exact sciences and technology
Fiber lasers
Fundamental areas of phenomenology (including applications)
Laser feedback
Lasers
Optical feedback
Optical losses
Optical mixing
Optical receivers
Optics
Physics
Power generation
Quantum well devices
Quantum well lasers
Semiconductor lasers
laser diodes
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Zusammenfassung:Narrow spectral linewidth lasers are developed for optical coherent transmission systems. To obtain a narrow spectral linewidth, a CPM (corrugation-pitch modulated) structure is introduced into 1200- mu m-long MQW-DFB (multi-quantum well distributed feedback) lasers. The CPM structure effectively suppresses the axial spatial hole burning effect and stabilized single-mode spectrum at high output powers. A spectral linewidth of 170 kHz was achieved at an output power of 25 mW. Details of corrugation fabrication method that makes the CPM structure possible are described.< >
ISSN:0018-9197
1558-1713
DOI:10.1109/3.90002