Major approaches taken for all-optical switching

[fibermart]

Optical switch is said as device whose optical transmission properties show difference by some other external influence or by an externally applied field. For this purpose, electric, magnetic, and surface acoustic wave techniques all are used. Light may get deflected away from a detector through these means, thus switching the beam. When a light signal is carried from a fiber optic network from one phone or computer to another, it may be needed to move the signal between different fiber paths. To make this happen a switch is required that with a minimum loss of voice or data quality can transfer the signal.

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