US5818994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the unadjusted coupling of a number of optical waveguides to a laser array
Assignee: Oclaro North America Inc
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Filing: 1996-09-19
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Granted: 1998-10-06
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Expires: 2016-09-19
Abstract
Abstract A device for coupling optical fibers to a laser array comprises a flat plate (1) with a number of V-grooves (7) and a cover (2) with a number of V-shaped grooves (8), the plate (1) and the cover (2) being fitted and adjusted to each other in such a way that the grooves (7, 8) form channels with a rhombic cross section. In these channels of such a device, pointed optical waveguides (4) may be pushed to a stop (9, 10), and may then be automatically adjusted to a laser array (3) that may be arranged on the plate (1) or cover.
Inventors
- 👤 Jorg Hehmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:59
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4249; G02B6/4219; G02B6/4228; G02B6/423; G02B6/4231
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
142 words
A device for coupling a plurality of optical fibers to a laser array, comprising: a flat substrate with a plurality of V-grooves and a laser array, ends of the V-grooves adjacent to the laser array being provided with an oblique stop; a flat cover with a same plurality of V-grooves as said flat substrate, ends of the V-grooves being provided with an oblique stop, said V-grooves of said substrate and cover being arranged to form rhombic channels after said substrate and cover have been fitted together, the ends of the V-grooves of each rhombic channel forming a pointed end stop for placing an optical fiber with a pointed end at a desired precise distance from the laser array after said substrate and cover have been fitted together; and means for precisely positioning the flat substrate and flat cover relative to each other.
Claim 2
Independent Claim
142 words
A device for coupling a plurality of optical fibers to a laser array, comprising: a flat substrate with a plurality of V-grooves and a laser array, ends of the V-grooves adjacent to the laser array being provided with an oblique stop; a flat cover with a same plurality of V-grooves as said flat substrate, ends of the V-grooves being provided with an oblique stop, said V-grooves of said substrate and cover being arranged to form rhombic channels after said substrate and cover have been fitted together, the ends of the V-grooves of each rhombic channel forming a pointed end stop for placing an optical fiber with a pointed end at a desired precise distance from the laser array after said substrate and cover have been fitted together; and means for precisely positioning the flat substrate and flat cover relative to each other.
Claim 3
Dependent Claim
43 words
A device as claimed in claim 1, wherein said pointed ends are stopped at a selected distance from the laser array, wherein said pointed ends are rounded to form a lens, and wherein said selected distance is a focal length of said lens.
Claim 4
Dependent Claim
27 words
A device as claimed in claim 2, wherein the flat substrate and flat cover are made of silicon, and wherein the V-grooves are formed by anisotropic etching.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-10-05 | 2002-04-06 | 2002-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-10-05 | 2006-04-06 | 2006-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-10-05 | 2010-04-06 | 2010-10-06 | $7700.00 | Window Closed / Lapsed |