Optical switch and the logic door of optical cable

Optical switch is a kind of very important passive device, since it gets extensive application in more and more fields, therefore also gets the universal solicitude of people. the index of optical switch, conversion time is the key that affects entire optical network performance, so seeking to the optical switch of more rapid response tine is the program that people are now studying with great efforts. The optical switch is the device according to requiring that convert optical signal of a optical channel into another optical channel, and the time since one optical signal of one channel declines to the optical signal risings in another channel is defined as conversion time of the optical switch .This paper has discussed the property parameter of optical switch. And the test method of the conversion time of optical switch, have given the relation result of test installation. Besides, we have given out a kind of working principle of the whole optical logic switch of optical cable and relation installation. And have analyzed its characteristic.