Optical transmission device and optical transmission method
AssigneeNTT, Inc.
InventorsHaruka MINAMI, Takeshi SEKI
Life of this patent
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Abstract
For an input signal requiring wavelength conversion, a WSS of an optical transmission device outputs a wavelength component after wavelength conversion from a cross connect to an output port as a transmission signal and also outputs a wavelength component before the wavelength conversion to a monitoring measurement instrument as an extraction signal, and, for an input signal not requiring wavelength conversion, outputs the wavelength component before the wavelength conversion from the cross connect to the output port as the transmission signal and also outputs the wavelength component after the wavelength conversion to the monitoring measurement instrument as the extraction signal.
Claims12
An optical transmission device that performs optical relay processing of outputting an input signal that is an input optical signal to another device as a transmission signal, the optical transmission device comprising
- a wavelength conversion unit, a first wavelength selective switch (WSS), a cross connect, and a monitoring measurement instrument, wherein:
- the wavelength conversion unit converts a wavelength of the input signal to the optical transmission device regardless of necessity of wavelength conversion of the input signal and outputs emission light including both wavelength components before and after the wavelength conversion to the first WSS;
- for an input signal requiring wavelength conversion, the first WSS outputs the wavelength component of the emission light after the wavelength conversion from the cross connect to an output port as the transmission signal and also outputs the wavelength component of the emission light before the wavelength conversion to the monitoring measurement instrument as an extraction signal, and
- for an input signal not requiring wavelength conversion, the first WSS outputs the wavelength component of the emission light before the wavelength conversion from the cross connect to the output port as the transmission signal and also outputs the wavelength component of the emission light after the wavelength conversion to the monitoring measurement instrument as the extraction signal;
- and
- the monitoring measurement instrument electrically terminates the extraction signal output from the first WSS to detect transmission quality data of the extraction signal.
An optical transmission device that performs optical relay processing of outputting an input signal that is an input optical signal to another device as a transmission signal, the optical transmission device comprising
- a wavelength conversion unit and a first WSS, wherein:
- the wavelength conversion unit converts a wavelength of the input signal to the optical transmission device regardless of necessity of wavelength conversion of the input signal and outputs emission light including both wavelength components before and after the wavelength conversion to the first WSS;
- and
- for an input signal requiring wavelength conversion, the first WSS outputs the wavelength component of the emission light after the wavelength conversion as the transmission signal and also outputs the wavelength component of the emission light before the wavelength conversion as an extraction signal, and
- for an input signal not requiring wavelength conversion, the first WSS outputs the wavelength component of the emission light before the wavelength conversion as the transmission signal and also outputs the wavelength component of the emission light after the wavelength conversion as the extraction signal.
-9. (canceled)
An optical transmission method, wherein:
- an optical transmission device includes a wavelength conversion unit, a first WSS, a cross connect, and a monitoring measurement instrument;
- the optical transmission device performs optical relay processing of outputting an input signal that is an input optical signal to another device as a transmission signal;
- the wavelength conversion unit converts a wavelength of the input signal to the optical transmission device regardless of necessity of wavelength conversion of the input signal and outputs emission light including both wavelength components before and after the wavelength conversion to the first WSS;
- for an input signal requiring wavelength conversion, the first WSS outputs the wavelength component of the emission light after the wavelength conversion from the cross connect to an output port as the transmission signal and also outputs the wavelength component of the emission light before the wavelength conversion to the monitoring measurement instrument as an extraction signal, and
- for an input signal not requiring wavelength conversion, the first WSS outputs the wavelength component of the emission light before the wavelength conversion from the cross connect to the output port as the transmission signal and also outputs the wavelength component of the emission light after the wavelength conversion to the monitoring measurement instrument as the extraction signal;
- and
- the monitoring measurement instrument electrically terminates the extraction signal output from the first WSS to detect transmission quality data of the extraction signal.
An optical transmission method, wherein:
- an optical transmission device includes a wavelength conversion unit and a first WSS;
- the optical transmission device performs optical relay processing of outputting an input signal that is an input optical signal to another device as a transmission signal;
- the wavelength conversion unit converts a wavelength of the input signal to the optical transmission device regardless of necessity of wavelength conversion of the input signal and outputs emission light including both wavelength components before and after the wavelength conversion to the first WSS;
- and
- for an input signal requiring wavelength conversion, the first WSS outputs the wavelength component of the emission light after the wavelength conversion as the transmission signal and also outputs the wavelength component of the emission light before the wavelength conversion as an extraction signal, and
- for an input signal not requiring wavelength conversion, the first WSS outputs the wavelength component of the emission light before the wavelength conversion as the transmission signal and also outputs the wavelength component of the emission light after the wavelength conversion as the extraction signal.
Dependencies are inferred from the claim text.