US5243609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser with longitudinal mode selection
Assignee: Ciena Corp
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Filing: 1992-05-22
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Granted: 1993-09-07
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Expires: 2012-05-22
Abstract
Abstract A laser is fabricated from an optical transmission medium having a laser cavity with an rare earth (e.g. Erbium) doped portion. At least one longitudinal mode is suppressed using a plurality of series coupled Fabry-Perot cavities, an optical grating, or a combination thereof. Ring lasers, Sagnac cavity lasers, Fox-Smith cavity lasers, and linear structures are disclosed.
Inventors
- 👤 David R. Huber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:57
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/08; H01S3/08018; H01S3/08022; H01S3/08031; H01S3/08036; H01S3/06; H01S3/063; H01S3/067; H01S3/081; H01S3/083; H01S3/0675; H01S3/06791; H01S3/082; H01S3/0823; H01S3/0826; H01S3/14; H01S3/16; H01S3/1601; H01S3/1603; H01S3/1608
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
61 words
A laser for providing an optical carrier comprising: a laser cavity including an active medium; means for pumping said active medium to generate a light beam for output from said laser cavity; and a grating resonator with a narrow bandpass characteristic in a guided wave portion of said laser cavity; wherein said grating resonator selects a desired mode of laser operation.
Claim 2
Dependent Claim
61 words
A laser for providing an optical carrier comprising: a laser cavity including an active medium; means for pumping said active medium to generate a light beam for output from said laser cavity; and a grating resonator with a narrow bandpass characteristic in a guided wave portion of said laser cavity; wherein said grating resonator selects a desired mode of laser operation.
Claim 3
Dependent Claim
25 words
A laser in accordance with claim 1 wherein said cavity comprises a reflector at one end thereof and a grating at the other end thereof.
Claim 4
Dependent Claim
26 words
A laser in accordance with claim 1 wherein said laser cavity is formed in an optical fiber at least partially doped with a rare earth element.
Claim 5
Dependent Claim
15 words
A laser in accordance with claim 1 wherein said laser cavity is a ring cavity.
Claim 6
Dependent Claim
16 words
A laser in accordance with claim 4 further comprising a Fabry-Perot cavity within said ring cavity.
Claim 7
Dependent Claim
15 words
A laser in accordance with claim 1 wherein said laser cavity is a Sagnac cavity.
Claim 8
Dependent Claim
25 words
A laser in accordance with claim 6 wherein said cavity comprises a reflector at one end thereof and a grating at the other end thereof.
Claim 9
Dependent Claim
15 words
A laser in accordance with claim 1 wherein said laser cavity comprises a Fox-Smith cavity.
Claim 10
Dependent Claim
15 words
A laser in accordance with claim 1 wherein said grating resonator comprises a moire grating.
Claim 11
Dependent Claim
26 words
A laser in accordance with claim 9 wherein said laser cavity is formed in an optical fiber at least partially doped with a rare earth element.
Claim 12
Dependent Claim
15 words
A laser in accordance with claim 10 wherein said laser cavity is a ring cavity.
Claim 13
Dependent Claim
16 words
A laser in accordance with claim 11 further comprising a Fabry-Perot cavity within said ring cavity.
Claim 14
Dependent Claim
15 words
A laser in accordance with claim 10 wherein said laser cavity comprises a Sagnac cavity.
Claim 15
Dependent Claim
25 words
A laser in accordance with claim 13 wherein said cavity comprises a reflector at one end thereof and a grating at the other end thereof.
Claim 16
Dependent Claim
15 words
A laser in accordance with claim 10 wherein said laser cavity comprises a Fox-Smith cavity.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-09-06 | 1997-03-08 | 1997-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-09-06 | 2001-03-08 | 2001-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-09-06 | 2005-03-08 | 2005-09-07 | $7700.00 | Window Closed / Lapsed |