Wavelength real time display on the equipment for WDM optical networking systems with wavelength tunable capability
AssigneeAT&T Intellectual Property II, L.P.
InventorGuodong Zhang
Life of this patent
Estimating the term…
Abstract
A wavelength tunable device for use in a wavelength division multiplexing (WDM) system comprising a display device for displaying at least one operating wavelength of the wavelength tunable device. The display device is electrically coupled to a control unit in the wavelength tunable device so as to display the tuned wavelength in real time. The wavelength tunable device may be, in exemplary embodiments, an optical transponder, wavelength division demultiplexer, or wavelength division multiplexer. In embodiments where the optical equipment has a plurality of tunable ports, the display device is adapted to display the operating wavelength of each tunable port.
Claims20
A wavelength division multiplexing system, comprising:
- a client receiver for receiving a first optical signal;
- a first optical/electric converter for converting the first optical signal to a first electrical signal;
- a line transmitter, tuned to a first wavelength by a tunable laser, for transmitting a second optical signal converted from the first electrical signal at the first wavelength;
- a line receiver for receiving a multiplexed incoming optical signal, the line receiver tuned by a tunable filter to select a signal at a second wavelength within the multiplexed incoming optical signal;
- a second optical/electrical converter for converting the multiplexed incoming optical signal to a second electrical signal;
- a client transmitter for transmitting a third optical signal converted from the second electrical signal;
- and
- a display device for displaying in real time an identification of the first wavelength in a first selectable mode and an identification of the second wavelength in a second selectable mode.
A transponder in a wavelength division multiplexing system, comprising:
- a tunable filter;
- a tunable laser;
- a line receiver for receiving a multiplexed incoming signal, the line receiver tuned by the tunable filter to select an optical signal at a first wavelength within the multiplexed incoming signal;
- a line transmitter, tuned to a second wavelength by the tunable laser, for transmitting an optical signal at the second wavelength;
- a control unit disposed within the transponder for communication between the line receiver and the line transmitter;
- and
- a display device, electrically coupled to the control unit, for displaying a first identification, a first frequency and a first channel of the first wavelength in a first selectable mode and a second identification, a second frequency and a second channel number of the second wavelength in a second selectable mode.
A method, comprising:
- receiving a first optical signal;
- converting the first optical signal to a first electrical signal;
- transmitting, by a line transmitter tuned to a first wavelength by a tunable laser, a second optical signal converted from the first electrical signal at the first wavelength
- receiving, by a line receiver, a multiplexed incoming optical signal, the line receiver tuned by a tunable filter to select a signal at a second wavelength within the multiplexed incoming optical signal;
- converting the multiplexed incoming optical signal to a second electrical signal;
- transmitting, by a client transmitter, a third optical signal converted from the second electrical signal;
- and
- displaying, by a display device, in real time an identification of the first wavelength in a first selectable mode and an identification of the second wavelength in a second selectable mode.
Dependencies are inferred from the claim text.