Title :
Demonstration of a low bandwidth 1.06 mu m optical phase-locked loop for coherent homodyne communication
Author :
Day, T. ; Farinas, A.D. ; Byer, R.L.
Author_Institution :
Edward L. Ginzton Lab., Stanford Univ., CA, USA
fDate :
4/1/1990 12:00:00 AM
Abstract :
A type-II, 1.06- mu m, optical phase-locked-loop (OPLL) for use in a coherent homodyne receiver is discussed. Diode-laser-pumped solid-state lasers are used for both the local oscillator and transmitter, because their phase noise is significantly lower than that of diode lasers. Closed-loop RMS phase noise of less than 12 mrad (0.69 degrees ) is achieved, and modulation-demodulation in bulk modulators at rates from 20 kHz to 20 MHz with less than 19 degrees of modulation depth is demonstrated.<>
Keywords :
optical communication equipment; optical modulation; phase-locked loops; receivers; 1.06 micron; 20 kHz to 20 MHz; closed loop RMS phase noise; coherent homodyne communication; coherent homodyne receiver; diode laser pumped solid state lasers; local oscillator; low bandwidth optical phase locked loop; modulation depth; modulation-demodulation; transmitter; Bandwidth; Diodes; Optical modulation; Optical noise; Optical receivers; Optical transmitters; Phase locked loops; Phase modulation; Phase noise; Solid lasers;
Journal_Title :
Photonics Technology Letters, IEEE
