Tunable laser guidance weapon, a new laser guidance weapon having higher anti-jamming, will be likely to appear in the future, with the development of tunable laser technique.

After comparing every method by measuring principle,resolution and measurement range,a CSWC ADI system was conceived with tunable diode laser to measure the step height in nanometer.

We conceive a CSWC ADI system with tunable diode laser to measure the step height in nanometer scale,and analyze the theoretic uncertainty of the experiment.

The state of the arts about tunable semiconductor lasers for optical communication systems is reviewed.

The tunable semiconductor lasers are important for a variety of applications such as optical communications.

2 In the second chapter, the operating principles of tunable semiconductor lasersand the tunable principles of tunable filters .

Bragg gratings and tunable semiconductor lasers are some of essential devices inoptical networks,and provide important guarantee for the reconfigurable AutomaticallySwitched Optical Network (ASON).

Improvement on optical fiber delay lines precision based on tunable laser;

Research Development of tunable lasers for communication systems;

Flash lamp pumped Ti:sapphire tunable laser;