Apparatus, systems, and methods for optical channel management
AssigneeJuniper Networks, Inc.
InventorsGert Grammel, Ajay Kachrani, Patrick Michael McEachern
Life of this patent
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Abstract
An apparatus includes a reconfigurable optical add/drop multiplexer (ROADM) having an input port to receive a first optical signal from a second device. The ROADM also includes a first wavelength selective switch (WSS), in optical communication with the input port, to convert the first optical signal into a second optical signal, a loopback, in optical communication with the first WSS, to transmit the second optical signal, and a second WSS, in optical communication with the loopback, to convert the second optical signal to a third optical signal and direct the third optical signal back to the second device via the input port.
Claims20
An apparatus, comprising:
- a reconfigurable optical add/drop multiplexer (ROADM) having:
- an input port to receive a first optical signal from a second device;
- a first wavelength selective switch (WSS), in optical communication with the input port, to convert the first optical signal into a second optical signal;
- a loopback, in optical communication with the first WSS, to transmit the second optical signal;
- and
- a second WSS, in optical communication with the loopback, to convert the second optical signal to a third optical signal and direct the third optical signal back to the second device via the input port.
A method, comprising:
- receiving a first optical signal from a second device via an input port of a reconfigurable optical add/drop multiplexer (ROADM);
- transmitting the first optical signal to a first wavelength selective switch (WSS) to convert the first optical signal into a second optical signal;
- transmitting the second optical signal to a second WSS, in optical communication with the input port, to convert the second optical signal to a third optical signal;
- and
- transmitting the third optical signal towards the second device via the input port.
A reconfigurable optical add/drop multiplexer (ROADM), comprising:
- an input port to receive a first optical signal from a second device;
- a wavelength selective switch (WSS), in optical communication with the input port, to convert the first optical signal into a second optical signal;
- a first spectral analyzer, operatively coupled to the input port, to acquire first spectral information of the first optical signal;
- an optical transmission line, in optical communication with the WSS, to transmit the second optical signal towards the second device;
- at least one user port, operatively coupled to the WSS, to receive at least a portion of the second optical signal;
- a second spectral analyzer, operatively coupled to the at least one user port, to acquire second spectral information of the second optical signal;
- and
- an optical channel monitor (OCM) operatively coupled to the first spectral analyzer and the second spectral analyzer, the OCM configured to:
- receive the first spectral information so as to locate the at least one user port;
- receive the second spectral information from the second spectral analyzer;
- and
- transmit the second spectral information to the second device.
Dependencies are inferred from the claim text.