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US 2008/0165365 A1Published application
Optical-phase monitoring appratus and optical-phase monitoring method
AssigneeFujitsu Limited
InventorShigeki Watanabe
Life of this patent
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Abstract
An optical-phase monitoring apparatus includes an optical switch, an optical-phase detecting circuit, and a display circuit. The optical switch multiplexes signal light and a control optical pulse, and outputs a portion of the signal light that overlaps with the control optical pulse in time as output light. The optical-phase detecting circuit detects an optical phase of the output light. The display circuit displays information concerning the optical phase.
Claims21
An optical-phase monitoring apparatus comprising:
- an optical switch that multiplexes signal light and a control optical pulse, and that outputs a portion of the signal light as output light, the portion overlapping with the control optical pulse in time;
- a phase detecting unit that detects an optical phase of the output light;
- and
- a display unit that displays information concerning the optical phase.
1 more element
An optical-phase monitoring method comprising
- multiplexing signal light and a control optical pulse;
- outputting a portion of the signal light, the portion overlapping with the control optical pulse in time as output light;
- detecting an optical phase of the output light;
- and
- displaying information concerning the optical phase.
2 more elements
Dependencies are inferred from the claim text.