Title :
Nondegenerate four-wave mixing efficiencies in DFB laser wavelength converters
Author :
Little, B.E. ; Kuwatsuka, H. ; Ishikawa, H.
Author_Institution :
Res. Lab. of Electron., MIT, Cambridge, MA, USA
fDate :
4/1/1998 12:00:00 AM
Abstract :
The salient parameters affecting nondegenerate four-wave-mixing (FWM) conversion efficiency in distributed-feedback (DFB) laser wavelength converters are examined analytically. Both the maximum attainable, and typical gain saturated, FWM efficiencies are derived. Typical DFB lasers cannot achieve maximum conversion efficiency due to gain saturation, while laser-amplifier combinations potentially can. The ratio of efficiency to spontaneous emission noise is also addressed, where it is found that this ratio increases quadratically with net unsaturated gain.
Keywords :
distributed feedback lasers; laser noise; multiwave mixing; optical frequency conversion; optical pumping; optical transmitters; semiconductor lasers; spontaneous emission; wavelength division multiplexing; DFB laser wavelength converters; DFB lasers; FWM conversion efficiency; FWM efficiencies; distributed-feedback laser wavelength converters; gain saturated; gain saturation; laser-amplifier combinations; maximum conversion efficiency; net unsaturated gain; nondegenerate four-wave mixing efficiencies; nondegenerate four-wave-mixing; salient parameters; spontaneous emission noise; Distributed Bragg reflectors; Four-wave mixing; Laboratories; Laser excitation; Laser modes; Laser noise; Propagation constant; Pump lasers; Semiconductor lasers; Wavelength conversion;
Journal_Title :
Photonics Technology Letters, IEEE
