Title :
Frequency response of an MQW DFB laser injected with intensity-modulated TM-polarized light
Author :
Yasaka, Hiroshi ; Kano, Fumiyoshi ; Watanabe, Masahiko
Author_Institution :
NTT Opto-Electron. Lab., Kanagawa, Japan
fDate :
3/1/1991 12:00:00 AM
Abstract :
The frequency response of a multiquantum-well (MQW) distributed-feedback (DFB) laser was measured by injecting intensity-modulated transverse-magnetic (TM)-polarized light. With low bias currents, the 3-dB bandwidth of the MQW DFB laser´s frequency response was anomalously enhanced by injection of intensity-modulated TM-polarized light. The maximum 3-dB bandwidth, 16 GHz, was observed when the normalized bias current (I/I/sub th/-1) was 1. The 3-dB bandwidth behavior of the MQW DFB laser with TM-polarized light injection looks promising for high-speed lasing mode control of semiconductor lasers.<>
Keywords :
distributed feedback lasers; frequency response; laser modes; optical modulation; semiconductor junction lasers; 16 GHz; MQW DFB laser; diode lasers; distributed-feedback; frequency response; high-speed lasing mode control; intensity-modulated TM-polarized light; low bias currents; multiquantum-well; semiconductor lasers; Bandwidth; Current measurement; Distributed feedback devices; Frequency measurement; Frequency response; Laser feedback; Laser modes; Optical polarization; Quantum well devices; Semiconductor lasers;
Journal_Title :
Photonics Technology Letters, IEEE
