Different Types Of Optical Switch

Various optical networks incorporate optical switches.Networks that require protection switching.Where key attributes must be reliable operation after a long period in a position, system monitoring, and diagnosis commonly operation after a long time in one position, system monitoring, and diagnosis commonly features these units.Speed is no longer a meaningful parameter for these applications. At speeds up to tens of milliseconds are considered acceptable.Dynamic optical routing later on will require much faster switching speeds.

Or technologies are put in place to optical switching than any other function within the optical networks.Four principal varieties of optical switches include opo-mechanical switches, thermo optic switches.Electro optic switches, and all Fiber Optical Switch .

Opto-mechanical Switch
Move and fiber these collated beams around inside the device.This is anticipated low optical loss, and hosts the distance between the output and input move and fiber optic cable these colli mator beams round inside the device.This allows for low optical loss, and permits distance between the output and input fibers without deleterious effects.These devices have more bulky opposed to other alternatives, although modern micro-mechanical devices overcome this.

Thermo-optic Switches
These are usually based on wave guides made in polymers or silica.For operation, they are dependent on the change of refractive index with temperature created by a resistive heater placed above the wave guide. Their slowness is not opposed to them in current applications.


Elector-optic Swithces
There are typically semiconductor-based, and their operation is a function of the change of refractive index with the electric field.This characteristic renders them intrinsically high -speed devices with low power consumption.Neither the electro -optic or thermo-optic switches can yet match the insertion loss, back reflection and long term stability of optical -mechanical optical switches.