US5608562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical communications system with adjustable dispersion compensation
Assignee: Nokia of America Corp
•
Filing: 1995-09-01
•
Granted: 1997-03-04
•
Expires: 2015-09-01
Abstract
Abstract An optical communication system uses adjustable dispersion compensating fibers to compensate for dispersion in system fibers. The amount of dispersion introduced by the dispersion compensating fibers is varied depending upon the amount of compensation required. The amount of compensation may be determined automatically and the amount of compensation introduced by the fibers may be adjusted automatically by a controller.
Inventors
- 👤 Jean-Marc P. Delavaux
- 👤 Kinichiro Ogawa
- 👤 Paul D. Yeates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:44
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/26; G02B6/28; G02B6/293; G02B6/29371; G02B6/29374; G02B6/29376; H; H04; H04B; H04B10/00; H04B10/25; H04B10/2507; H04B10/2513; H04B10/2525; H04B2210/00; H04B2210/25; H04B2210/258
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
95 words
An optical communication system comprising a transmitter, a receiver, first and second optical fibers optically connected to said receiver and said transmitter, respectively, at least two adjustable compensating waveguides, said at least two adjustable compensating waveguides introducing a variable amount of compensation and being optically connected to said first and second fibers; apparatus to switch signals to said two adjustable compensating waveguides; and a controller, said controller being connected to at least one adjustable waveguide of said two adjustable compensating waveguides and determining the compensation of at least one of said two adjustable compensating waveguides.
Claim 2
Dependent Claim
95 words
An optical communication system comprising a transmitter, a receiver, first and second optical fibers optically connected to said receiver and said transmitter, respectively, at least two adjustable compensating waveguides, said at least two adjustable compensating waveguides introducing a variable amount of compensation and being optically connected to said first and second fibers; apparatus to switch signals to said two adjustable compensating waveguides; and a controller, said controller being connected to at least one adjustable waveguide of said two adjustable compensating waveguides and determining the compensation of at least one of said two adjustable compensating waveguides.
Claim 3
Dependent Claim
23 words
An optical communication system as recited in claim 1 in which said at least two adjustable compensating waveguides vary the amount of dispersion.
Claim 4
Dependent Claim
22 words
An optical communications system as recited in claim 1 in which said at least two adjustable compensating waveguides comprise an optical fiber.
Claim 5
Dependent Claim
18 words
An optical communications system as recited in claim 3 in which said optical fiber is used in reflection.
Claim 6
Dependent Claim
18 words
An optical communications system as recited in claim 3 in which said optical fiber is used in transmission.
Claim 7
Dependent Claim
27 words
An optical communications system as recited in claim 1 in which said controller is connected to said receiver and comprises means for receiving information from said receiver.
Claim 8
Dependent Claim
25 words
An optical communications system as recited in claim 1 in which said apparatus comprises a multiplexer/demultiplexer connected to said at least said adjustable compensating waveguides.
Claim 9
Dependent Claim
29 words
An optical communications system comprising a plurality of systems as recited in claim 1, each of said systems being optically connected to at least one other of said systems.
Claim 10
Dependent Claim
46 words
Optical apparatus comprising at least two automatically adjustable compensating waveguides introducing a variable amount of compensation; a controller, said controller determining the amount of dispersion compensation; and apparatus connected to said at least one of automatically adjustable compensating waveguides for switching signals to said compensating waveguides.
Claim 11
Dependent Claim
46 words
Optical apparatus comprising at least two automatically adjustable compensating waveguides introducing a variable amount of compensation; a controller, said controller determining the amount of dispersion compensation; and apparatus connected to said at least one of automatically adjustable compensating waveguides for switching signals to said compensating waveguides.
Claim 12
Dependent Claim
20 words
Optical apparatus as recited in claim 9 in which said automatically adjustable compensating waveguides comprise at least two optical fibers.
Claim 13
Dependent Claim
18 words
Optical apparatus as recited in claim 10 in which said at least two optical fibers have different dispersion.
Claim 14
Dependent Claim
25 words
Optical apparatus as recited in claim 10 in which said apparatus comprises a multiplexer/demultiplexer connected to said at least one of said adjustable compensating waveguides.
References Cited (Backward Citations)
US4953939A
Cited
US4750802A
Cited
US4929710A
Cited
JPH0230233A
Cited
US5042906A
Cited
US5355240A
Cited
US5261016A
Cited
US5343322A
Cited
US5218662A
Cited
US5224183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-03-03 | 2000-09-02 | 2001-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-03 | 2004-09-02 | 2005-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-03-03 | 2008-09-02 | 2009-03-04 | $7700.00 | Window Closed / Lapsed |