Title :
Tunable DFB laser with a striped thin-film heater
Author :
Sakano, Shinji ; Tsuchiya, Tomonobu ; Suzuki, Makoto ; Kitajima, Shigeki ; Chinone, Naoki
Author_Institution :
Hitachi Ltd., Tokyo, Japan
fDate :
4/1/1992 12:00:00 AM
Abstract :
The authors propose a very simple tunable laser with a striped thin-film heater. The wavelength of this laser changes with a sensitivity of 3.2 nm/W to the input heating power. This laser can be continuously tuned over a range of 4 nm while maintaining an optical power of 20 mW and with a linewidth of less than 2.5 MHz. When this laser is mounted on a module, its 90% response time is 6 ms, which is fast enough for use as a local oscillator in several applications.<>
Keywords :
distributed feedback lasers; laser tuning; optical communication equipment; semiconductor junction lasers; sensitivity; spectral line breadth; 20 mW; 6 ms; DFB laser; FDM system lasers; continuously tuned; input heating power; linewidth; local oscillator; module; mounted; optical power; optical switches; response time; semiconductor diode lasers; semiconductor switches; sensitivity; striped thin-film heater; tunable laser; Distributed Bragg reflectors; Laser modes; Laser transitions; Laser tuning; Power generation; Power lasers; Thermal resistance; Transistors; Tunable circuits and devices; Waveguide lasers;
Journal_Title :
Photonics Technology Letters, IEEE
