An all optical switch is a device that allows one optical signal to control another optical signal, i.
The above definition of an all-optical switch is rather general, encompassing many possible devices. Here we will illustrate three types of all-optical switchs. As a first example, we illustrate the behavior of our switch, shown to the right. In this device, a single beam of light blue is emitted from a nonlinear material and exits in a certain direction.
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This is one of the two states of the switch; let's call it the "off" state. The switch is turned to the "on" state, when a second light beam, the switching beam red , is injected into the nonlinear optical material. As a result, the output beam blue is emitted in a different direction.
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On the left, we show a second example of an all-optical switch. Here, a single beam of light blue passes through a nonlinear material and exits in a certain direction. On the right, we illustrate the behavior of a third example of an all-optical switch.
In this device, a single beam of light blue passes through a nonlinear material and exits in a certain direction. This is one of the two states of the switch; let's call it the "on" state. The switch is turned to the "off" state, when a second light beam, the switching beam red , is injected into the nonlinear optical material.
In this case, the light of both the first beam blue and the switching beam red is absorbed by the material and there is no output light at all. Electrical switches have been used as long as electricity has been used.
In an all-electrical switch, electrical signals are used to open or close the switch. An all-optical switch performs the same function but instead of electrical signals, it controls optical signals: light. Without any doubt, all-electrical switches are extremely useful. DiCon's prism optical switch achieve channel switching by mechanically actuating a prism in to or out of the optical path. Higher channel count is accomplished by cascading multiple prisms in a series. The prism fiber optic switch is an ideal option for network protection applications where latching is necessary.
Our motorized optical switch uses a high accuracy stepper motor to rotate the input fiber precisely to the aligned output fiber positions. Any queries other than missing content should be directed to the corresponding author for the article. Volume 58 , Issue The full text of this article hosted at iucr. If you do not receive an email within 10 minutes, your email address may not be registered, and you may need to create a new Wiley Online Library account.
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Bishnu P. Nabil A. Xinliang Feng Corresponding Author E-mail address: xinliang. Read the full text. Tools Request permission Export citation Add to favorites Track citation. Share Give access Share full text access. Share full text access.