Phase noise reduction by self-phase locking in semiconductor lasers using phase conjugate feedback
| Autor: | L. Petersen, T.N. Nielsen, U. Gliese |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Physics
Oscillator phase noise business.industry Relative intensity noise Noise spectral density Quantum noise Physics::Optics Condensed Matter Physics Noise (electronics) Atomic and Molecular Physics and Optics Burst noise Optics Phase noise Flicker noise Electrical and Electronic Engineering business |
| Zdroj: | Petersen, L, Gliese, U B & Nielsen, T N 1994, ' Phase noise reduction by self-phase locking in semiconductor lasers using phase conjugate feedback ', I E E E Journal of Quantum Electronics, vol. 30, no. 11, pp. 2526-2533 . https://doi.org/10.1109/3.333704 |
| ISSN: | 0018-9197 |
| DOI: | 10.1109/3.333704 |
| Popis: | A theoretical analysis of the behavior of the frequency/phase noise of semiconductor lasers with external phase conjugate feedback is presented. It is shown that the frequency noise is drastically reduced even for lasers with butt-coupled phase conjugate mirrors. In this laser system, the phase noise takes a finite-low value corresponding to a state of first-order self-phase locking of the laser. As a result, the spectral shape of the laser signal does not remain Lorentzian but collapses around the carrier to a delta function with a close to carrier noise level of less than -137 dBc/Hz. The total phase variance of this laser signal, in a 20 GHz noise bandwidth, is less than 0.002 rad/sup 2/. > |
| Databáze: | OpenAIRE |
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