Optical device with optical filters and processing method of optical signals
AssigneeNEC Corporation
InventorsYurie Matsuyama, Takefumi Oguma
Life of this patent
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Abstract
[Problem] To provide an optical device capable of suppressing an optical signal from being trimmed because of band narrowing due to optical filters. [Solution] An optical device according to the present invention is provided with a plurality of optical filters each of which filters an optical signal in a predetermined band out of a plurality of optical signals with wavelengths different from one another. The plurality of optical filters are configured in such a way that portions of the pass bands (13_1, 13_2, 13_3) of respective optical filters that respectively pass optical signals (15_1, 15_2, 15_3) with wavelengths adjacent to each other overlap each other.
Claims16
An optical device comprising
- a first optical filter configured to pass first optical signals from a first multiplexed signal, the first optical signals comprising a first optical channel;
- a second optical filter configured to pass second optical signals from a second multiplexed signal, the second optical signals comprising a second optical channel;
- and
- a multiplexer configured to multiplex the past first optical signals and the past second optical signals,
- wherein the first optical filter comprises a first pass band and the second optical filter comprises a second pass band, the first pass band and the second pass band overlapping each other.
A processing method of optical signals comprising:
- inputting a first multiplexed signal to a first optical filter with a first pass band;
- passing first optical signals from the first multiplexed signal, the first optical signals comprising a first optical channel;
- inputting a second multiplexed signal to a second optical filter with a second pass band, the first pass band and the second pass band overlapping each other;
- passing second optical signals from the second multiplexed signal, the second optical signals comprising a second optical channel;
- and
- multiplexing the past first optical signals and the past second optical signals.
Dependencies are inferred from the claim text.