Single-mode properties of distributed-reflector lasers
The fundamental properties of a distributed-reflector (DR) laser, consisting of an active section and a passive distributed reflector section are theoretically investigated. The DR laser, in principle, has the properties of high efficiency and high-power performance in dynamic-single-mode operation, thus eliminating the problems of low device efficiency in DFB lasers and low output power in DBR lasers. The effective length of a distributed reflector including gain and loss is introduced as a novel concept and is applied for the analytical determination of the lasing condition. The conditions required for dynamic-single-mode operation with one-facet output are given in terms of the propagation constant difference between the active and passive regions related to the coupling coefficient of the passive reflector. This condition is experimentally found to be attainable by utilizing a conventional fabrication process.
- Research Organization:
- Dept. of Physical Electronics, Tokyo Institute of Technology, Meguro-ku, Tokyo 152 (JP)
- OSTI ID:
- 5895482
- Journal Information:
- IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. 25:6; ISSN IEJQA
- Country of Publication:
- United States
- Language:
- English
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