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Ch9Sec4 - 3 P 1 Switching speed Typically in the order of...

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Dr. Joseph C. Palais 9.4 1 THE FIBER FORUM Fiber Optic Communications Dr. JOSEPH C. PALAIS PRESENTED BY
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Dr. Joseph C. Palais 9.4 2 Section 9.4 Switches
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Dr. Joseph C. Palais 9.4 3 Mechanical Switches A switches change the path of the optical beam. A two-position switch looks (schematically) like: P 1 P 2 P 3 1 Properties Insertion loss: L IL = - 10 log (P 2 / P 1 ) Fibers
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Dr. Joseph C. Palais 9.4 4 Crosstalk: L CT = - 10 log (P
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Unformatted text preview: 3 / P 1 ) Switching speed: Typically in the order of the millisecond. Dr. Joseph C. Palais 9.4 5 Sliding Prism Switch 2 1 3 Fiber Grin Lens Total Reflection Movable 90 o Prism Dr. Joseph C. Palais 9.4 6 The prism provides 100% reflection and displaces the beam parallel to itself. Moving the prism down, switches the beam coming from port 1 to port 3....
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