Spectral-threshold characteristics of a distributed-feedback laser with the sinusoidal modulation of coupling coefficient
- B.I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk (Belarus)
The spectral-threshold characteristics of a distributed-feedback (DFB) laser with the sinusoidal modulation of the complex coupling coefficient are studied within the framework of the linear theory of coupled modes. The analysis is performed in a broad range of amplitudes of the coupling coefficient for phase, amplitude, and amplitude - phase gratings providing distributed feedback in the active medium of the laser. It is shown that the eigenmode spectrum of the DFB laser on a phase grating with a large-scale modulation of the coupling coefficient is similar to the eigenmode spectrum of the DFB laser on an amplitude grating with a constant coupling coefficient. The DFB laser under study is promising for obtaining stable single-frequency lasing and can find applications in devices in integrated optics. (lasers)
- OSTI ID:
- 21470513
- Journal Information:
- Quantum Electronics (Woodbury, N.Y.), Vol. 34, Issue 4; Other Information: DOI: 10.1070/QE2004v034n04ABEH002673; ISSN 1063-7818
- Country of Publication:
- United States
- Language:
- English
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