Title :
Nondegenerate four-wave mixing in a long-cavity λ/4-shifted DFB laser using its lasing beam as pump beams
Author :
Kuwatsuka, H. ; Shoji, H. ; Matsuda, M. ; Ishikawa, Hiroshi
Author_Institution :
Fujitsu Labs. Ltd., Atsugi, Japan
fDate :
11/1/1997 12:00:00 AM
Abstract :
In this paper, we discuss nondegenerate four-wave mixing in a lasing long-cavity λ/4-shifted DFB laser using the laser beams as pump beams. A high conversion efficiency and wide conversion range were experimentally demonstrated without the assistance of Fabry-Perot resonance. Electric field profiles of the pump, signal, and conjugate beam in our λ/4-shifted DFB laser are discussed. The third-order nonlinear susceptibilities of InP-InGaAs MQW´s are then estimated from the experimental results. We discuss the saturation characteristics and the ratio of the conjugate power to the amplified spontaneous emission. We show that λ/4-shifted DFB lasers are suitable for wavelength converters using nondegenerate four-wave mixing because of their ability to provide single-device operation
Keywords :
distributed feedback lasers; laser beams; laser cavity resonators; multiwave mixing; nonlinear optical susceptibility; optical pumping; optical transmitters; quantum well lasers; superradiance; wavelength division multiplexing; λ/4-shifted DFB laser; λ/4-shifted DFB lasers; Fabry-Perot resonance; InP-InGaAs; InP-InGaAs MQWs; amplified spontaneous emission; conjugate beam; conjugate power; electric field profiles; high conversion efficiency; lasing beam; long-cavity λ/4-shifted DFB laser; nondegenerate four-wave mixing; pump beam; pump beams; saturation characteristics; semiconductor lasers; signal beam; single-device operation; third-order nonlinear susceptibilities; wavelength converters; wide conversion range; Distributed feedback devices; Four-wave mixing; Laser beams; Laser excitation; Laser feedback; Laser mode locking; Optical wavelength conversion; Pump lasers; Semiconductor lasers; Waveguide lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
