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US 6,480,312 B1Granted
Dispersion compensating system used for bi-directional optical communication
AssigneeSumitomo Electric Industries, Ltd.
InventorsToshiaki Okuno, Masashi Onishi, Masayuki Nishimura
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Abstract
The present invention provides a dispersion compensating system for bi-directional optical communication using wavelength division multiplexing transmission. Signal lights bi-directionally pass through a signal optical fiber which comprises a dispersion compensating fiber working bi-directionally.
Claims19
A dispersion compensating system used for bidirectional optical communication system using wavelength division multiplex transmission comprising:
- a bi-directional optical fiber path;
- a dispersion compensator provided on said bidirectional optical fiber path;
- optical circulators/couplers disposed on both ends of said bidirectional optical fiber path;
- an optical amplifier disposed on each divisional optical fiber path connected to said optical circulators/couplers, wherein the divisional optical fiber paths are configured for uni-directional signal transmissions;
- and
- at least one supplemental dispersion compensator disposed on the divisional optical fiber paths connected to said optical circulators/couplers.
3 more elements
A dispersion compensating system comprising:
- a first optical fiber path for bi-directional transmission;
- a first 3-port coupler connected to the first optical fiber path;
- a second optical fiber path for transmission in a first direction connected between the first 3-port coupler and a second 3-port coupler;
- a third optical fiber path for bi-directional transmission connected between the second 3-port coupler and a third 3-port coupler;
- a fourth optical fiber path for transmission in the first direction connected between the third 3-port coupler and a fourth 3-port coupler;
- a fifth optical fiber path for bi-directional transmission connected to the fourth 3-port coupler;
- a sixth optical fiber path for transmission in a second direction connected between the first 3-port coupler and the second 3-port coupler;
- and
- a seventh optical fiber path for transmission in the second direction connected between the third 3-port coupler and the fourth 3-port coupler wherein optical amplifiers are provided on the second, fourth, sixth and seventh optical fiber paths, a dispersion compensator is provided on the third optical fiber path, and at least one supplemental dispersion compensator is disposed on the second, the fourth, the sixth or the seventh optical fiber path.
6 more elements
A bi-directional optical communication system comprising:
- a first optical fiber path for bi-directional transmission;
- a first 3-port coupler connected to the first optical fiber path;
- a second optical fiber path for transmission in a first direction connected between the first 3-port coupler and a second 3-port coupler;
- a third optical fiber path for bi-directional transmission connected between the second 3-port coupler and a third 3-port coupler;
- a fourth optical fiber path for transmission in the first direction connected between the third 3-port coupler and a fourth 3-port coupler;
- a fifth optical fiber path for bi-directional transmission connected to the fourth 3-port coupler;
- a sixth optical fiber path for transmission in a second direction connected between the first 3-port coupler and the second 3-port coupler;
- and
- a seventh optical fiber path for transmission in the second direction connected between the third 3-port coupler and the fourth 3-port coupler wherein optical amplifiers are provided on the second, fourth, sixth and seventh optical fiber paths, a dispersion compensator is provided on the third optical fiber path, and at least one supplemental dispersion compensator is disposed on the second, the fourth, the sixth or the seventh optical fiber path.
6 more elements
Dependencies are inferred from the claim text.