Determination of white and 1/f FM noise components of semiconductor laser spectrum by a delayed self-heterodyne interferometer using short delay fiber

Autor: Mohammed Nazrul Islam, Masaaki Imai, Tadakazu Nomura, M. Q. Huda
Rok vydání: 1999
Předmět:
Zdroj: SPIE Proceedings.
ISSN: 0277-786X
DOI: 10.1117/12.370329
Popis: The measurement and evaluation of power spectrum of a semiconductor laser by delayed self-heterodyne interferometer is demonstrated with the use of a short delay fiber. The measured spectrum is analyzed numerically including the effect of a delay time much less than the laser coherence time. The theoretical formulation developed here is found to be found to be accurate since it exhibits a peak with finite width at the center frequency of the measured lineshape. The white and 1/f components of the laser FM noise are then separated successfully by fitting numerical analysis to the experimental results.
Databáze: OpenAIRE