Title :
Phase Noise Power Spectral Density Measurement of Narrow Linewidth CW Lasers Using an Optical Phase-Locked Loop
Author :
Camatel, Stefano ; Ferrero, Valter
Author_Institution :
PhotonLab, Ist. Superiore Mario Boella, Torino
Abstract :
A novel technique for continuous-wave (CW) laser phase noise power spectral density measurement, useful for coherent communications, is proposed. It employs a homodyne optical phase-locked loop. Experimental results are compared with a self-heterodyne linewidth measurement and the comparison shows how the proposed measurement method gives more accurate results for coherent transmission system applications
Keywords :
homodyne detection; laser noise; laser variables measurement; light coherence; optical communication equipment; optical phase locked loops; phase noise; spectral line narrowing; coherent transmission system; laser linewidth narrowing; optical phase-locked loop; phase noise power; spectral density measurement; Density measurement; Laser noise; Optical interferometry; Optical noise; Optical sensors; Phase locked loops; Phase measurement; Phase noise; Power lasers; Semiconductor lasers; Homodyne detection; phase measurement; phase noise; phase-locked loops;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.887206
