Patent US4812005A successfully refreshed from Google Patents.
US4812005A
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US
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Arrangement for coupling a laser diode and a monomode light waveguide having a feedback means
Assignee: Siemens AG
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Filing: 1987-03-16
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Granted: 1989-03-14
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Expires: 2007-03-16
Abstract
Abstract An arrangement for coupling a laser diode and a monomode light waveguide, wherein a fine adjustment is particularly simple. The laser diode is a gain-guided diode having an end face coacting with an end face of the optical waveguide to form a coupling location and the arrangement includes a feedback arrangement for conducting a part of the light coupled from the laser diode into the light waveguide back through the waveguide and back into the laser diode. The feedback means comprises either one or more metallized rings having a width of a few light wavelengths being applied on a cylindrical surface of the monomode glass fiber forming the monomode light waveguide at a distance of a few micrometers from the coupling location, one or more notches in the outer surface of the fiber or combination of rings and notches.
Inventors
- 👤 Walter Heywang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:09
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/10; H01S5/14; H01S5/146; G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4202; G02B6/4219; G02B6/4236; G02B6/424; G02B6/4244; G02B6/4245; H01S5/02; H01S5/028; H01S5/12; H01S5/125
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
125 words
An arrangement for coupling a laser diode and a monomode light waveguide, said arrangement comprising a gain-guided laser diode having a coupling surface, a monomode light waveguide being an optical glass fiber having an end face forming a coupling surface engaging the coupling surface of the laser diode to form a coupling location, said waveguide having feedback means at a distance from the coupling location for conducting a part of the light coupled into the light waveguide back in the waveguide to the laser diode, said feedback means comprising at least one metallized ring having a width of a few wavelengths being applied on an outer surface of the glass fiber at a distance of a few micrometers from the end face of the waveguide.
Claim 2
Dependent Claim
125 words
An arrangement for coupling a laser diode and a monomode light waveguide, said arrangement comprising a gain-guided laser diode having a coupling surface, a monomode light waveguide being an optical glass fiber having an end face forming a coupling surface engaging the coupling surface of the laser diode to form a coupling location, said waveguide having feedback means at a distance from the coupling location for conducting a part of the light coupled into the light waveguide back in the waveguide to the laser diode, said feedback means comprising at least one metallized ring having a width of a few wavelengths being applied on an outer surface of the glass fiber at a distance of a few micrometers from the end face of the waveguide.
Claim 3
Dependent Claim
36 words
An arrangement according to claim 1, wherein the means in addition to at least one metallized ring on the outer surface include at least one annular notch in the outer surface of the optical glass fiber.
Claim 4
Dependent Claim
20 words
An arrangement according to claim 1, wherein the means comprises a plurality of metallized rings on the optical glass fiber.
Claim 5
Dependent Claim
40 words
An arrangement according to claim 3, wherein the means in addition to a plurality of metallized rings on the outer surface of the optical glass fiber includes a plurality of spaced annular notches in the outer surface of the fiber.
Claim 6
Dependent Claim
102 words
An arrangement for coupling a laser diode and a monomode light waveguide, said arrangement comprising a gain-guided laser diode having a coupling surface, a monomode light waveguide being an optical glass fiber having an end face forming a coupling surface engaging the coupling surface of the laser diode to form a coupling location, said waveguide having feedback means at a distance from the coupling location for conducting a part of the light coupled into the light waveguide back in the waveguide to the diode, said feedback means comprising at least one annular notch in an outer surface of the optical glass fiber.
Claim 7
Dependent Claim
102 words
An arrangement for coupling a laser diode and a monomode light waveguide, said arrangement comprising a gain-guided laser diode having a coupling surface, a monomode light waveguide being an optical glass fiber having an end face forming a coupling surface engaging the coupling surface of the laser diode to form a coupling location, said waveguide having feedback means at a distance from the coupling location for conducting a part of the light coupled into the light waveguide back in the waveguide to the diode, said feedback means comprising at least one annular notch in an outer surface of the optical glass fiber.
Claim 8
Dependent Claim
24 words
An arrangement according to claim 5, wherein said means include at least one metallized ring on the outer surface in addition to said notch.
Claim 9
Dependent Claim
24 words
An arrangement according to claim 5, wherein the means comprises a plurality of annular notches in the outer surface of the optical glass fiber.
Claim 10
Dependent Claim
31 words
An arrangement according to claim 7, wherein the means comprises a plurality of metallized rings on the outer surface of the optical glass fiber in addition to the plurality of notches.
References Cited (Backward Citations)
US3760297A
Cited
US3803511A
Cited
FR2310580A1
Cited
US4143940A
Cited
US4156206A
Cited
JPS55115008A
Cited
US4372644A
Cited
US4427261A
Cited
US4594718A
Cited
US4601535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-13 | 1992-09-12 | 1993-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-13 | 1996-09-12 | 1997-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-13 | 2000-09-12 | 2001-03-14 | $7700.00 | Window Closed / Lapsed |