Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1992-03-27
1994-03-29
Chilcot, Jr., Richard E.
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359117, 359128, 371 82, 370 16, H04B 1008
Patent
active
052992934
ABSTRACT:
A protection arrangement protects an optical transmitter device with n optical transmit circuits or an optical receiver device with n optical receive circuits. It includes fault evaluating circuitry to detect a defective transmit/receive circuit, a spare transmit/receive circuit, and switching circuitry. Upon detection of a defective transmit/receive circuit by the fault evaluating circuitry, the fault evaluation circuitry controls the spare transmit/receive circuit and the switching circuitry to bypass the defective transmit/receive circuit with the spare transmit/receive circuit.
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patent: 4696060 (1987-09-01), Oswald
patent: 4887309 (1989-12-01), Andersson et al.
patent: 5091796 (1992-02-01), Nishimura et al.
Wu et al., "Decreasing Survivable Fiber Network Cost Using Optical Switches", GLOBECOM '88, IEEE Global Telecommunications Conference & Exhibition, Conference Record, pp. 93-97, vol. 1, Nov. 28-Dec. 1, 1988.
DIALOG English Language Abstract of FR 2 598 573.
Mestdagh Denis J. G.
Van de Voorde Ingrid Z. B.
ALCATEL N.V.
Chilcot Jr. Richard E.
Negash K.
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