Reconfigurable optical add drop multiplexer core device, procedure and system using such device, optical light distributor, and coupling-ratio assigning procedure
First Claim
1. A reconfigurable optical add drop multiplexer core device comprising:
- a light distributor configured to receive an optical signal along a primary input of the reconfigurable optical add drop multiplexer core device and to distribute the received optical signal along a plurality of subtending outputs to drop ports thereof;
a coupling device configured to receive optical signals along a plurality of subtending inputs, to combine the received optical signals into a combined signal, and to output the combined signal; and
first and second sets of add ports connected to the coupling device and configured to add signals locally from transponders, the coupling ratio of the coupling device being selected so that the insertion loss along a path from an add port of the second add-port set through the coupling device is less than the insertion loss along a path from an add port of the first add-port set through the coupling device.
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Accused Products
Abstract
A reconfigurable optical add drop multiplexer core device includes a light distributor, a light combiner, and first and second sets of add and drop ports. The light distributor is configured to receive an optical signal along a primary input of the reconfigurable optical add drop multiplexer core device and to distribute the received optical signal along a plurality of subtending outputs. The light combiner is configured to receive optical signals along a plurality of subtending inputs, to combine the received optical signals into a combined signal, and to output the combined signal. The add and drop ports in the first set function as add and drop ports, respectively, and the add and drop ports in the second set function as both add and drop ports, respectively, and as express ports connectable to another reconfigurable optical add drop multiplexer core device.
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Citations
17 Claims
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1. A reconfigurable optical add drop multiplexer core device comprising:
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a light distributor configured to receive an optical signal along a primary input of the reconfigurable optical add drop multiplexer core device and to distribute the received optical signal along a plurality of subtending outputs to drop ports thereof; a coupling device configured to receive optical signals along a plurality of subtending inputs, to combine the received optical signals into a combined signal, and to output the combined signal; and first and second sets of add ports connected to the coupling device and configured to add signals locally from transponders, the coupling ratio of the coupling device being selected so that the insertion loss along a path from an add port of the second add-port set through the coupling device is less than the insertion loss along a path from an add port of the first add-port set through the coupling device. - View Dependent Claims (2, 3, 4, 5, 6, 11, 12, 13, 14, 15, 16, 17)
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7. A procedure for providing a first reconfigurable optical add drop multiplexer core device having a primary input comprising:
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providing a light distributor configured to receive an optical signal along the primary input and distribute the received optical signal along a plurality of subtending outputs connected to drop ports thereof; providing a coupling device configured to receive optical signals, to combine the received optical signals into a combined signal, and to output the combined signal; and providing first and second sets of add ports connected to the coupling device and configured to add signals locally from transponders, the coupling ratio of the coupling device being selected so that the insertion loss along a path from an add port of the second add-port set through the coupling device is less than the insertion loss along a path from an add port of the first add-port set through the coupling device. - View Dependent Claims (8, 9, 10)
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Specification