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 configured to receive a first optical signal from a device;
- a first spectral analyzer, operatively coupled to the input port, configured to acquire first spectral information of the first optical signal;
- a user port, operatively coupled to the input port, configured to receive a second optical signal converted from the first optical signal;
- a second spectral analyzer, operatively coupled to the user port, configured 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, configured to:
- receive the first spectral information from the first spectral analyzer;
- locate
- the user port based at least in part on the first spectral information;
- receive the second spectral information from the second spectral analyzer;
- and
- transmit the second spectral information to the device.
A method, comprising:
- receiving, via an input port of a reconfigurable optical add/drop multiplexer (ROADM), a first optical signal from a device;
- acquiring, via a first spectral analyzer, first spectral information of the first optical signal;
- receiving, via a user port, a second optical signal converted from the first optical signal;
- acquiring, via a second spectral analyzer, second spectral information of the second optical signal;
- receiving, at an optical channel monitor (OCM), the first spectral information from the first spectral analyzer;
- locating the user port based at least in part on the received first spectral information;
- receiving, at the OCM, the second spectral information from the second spectral analyzer;
- and
- transmitting the second spectral information to the device.
An apparatus, comprising:
- a reconfigurable optical add/drop multiplexer (ROADM) having:
- an input port to receive a first optical signal from a 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 loopback, in optical communication with the WSS, to transmit the second optical signal to the device;
- a timer configured to count a predetermined expiration time;
- and
- a transponder operatively coupled to the timer and the input port, the transponder configured to generate an error message representing an erroneous connection between the device and the input port in response to no signal being received by the device within the predetermined expiration time.
Dependencies are inferred from the claim text.