US5367140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for laser welding of optical packages
Assignee: Nokia Bell Labs
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Filing: 1993-12-27
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Granted: 1994-11-22
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Expires: 2013-12-27
Abstract
Abstract A piezoelectric actuator is used to control the relative positions of a laser and optical fiber during laser welding of components to a base.
Inventors
- 👤 Musa K. Jouaneh
- 👤 Sabbir S. Rangwala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:34
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4219; G02B6/422; G02B6/4226; B; B23; B23K; B23K26/00; B23K26/02; B23K26/04; B23K26/042; G02B6/4227; G02B6/4236; G02B6/4237
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
93 words
A method of manufacturing an optical package comprising the steps of: attaching a laser to a base; positioning an optical fiber in a fiber tube in a saddle in an approximate desired position with respect to said laser, laser welding said optical fiber in said position by selectively heating the interface between said fiber tube and said saddle to weld said fiber tube and said saddle; monitoring the position of said fiber during said welding; and using a piezoelectric actuator to move said fiber to said final desired position during said laser welding.
Claim 2
Independent Claim
93 words
A method of manufacturing an optical package comprising the steps of: attaching a laser to a base; positioning an optical fiber in a fiber tube in a saddle in an approximate desired position with respect to said laser, laser welding said optical fiber in said position by selectively heating the interface between said fiber tube and said saddle to weld said fiber tube and said saddle; monitoring the position of said fiber during said welding; and using a piezoelectric actuator to move said fiber to said final desired position during said laser welding.
Claim 3
Dependent Claim
25 words
A method as recited in claim 1 in which said actuator moves said fiber in a direction perpendicular to the longitudinal axis of said fiber.
Claim 4
Dependent Claim
22 words
A method as recited in claim 2 in which said monitoring measures the optical energy transmitted through said fiber from said laser.
Claim 5
Dependent Claim
18 words
A method as recited in claim 1 in which said piezoelectric actuator comprises at least one flexure hinge.
Claim 6
Dependent Claim
19 words
A method as recited in claim 3 in which said monitoring is continued after said laser is turned off.
Claim 7
Dependent Claim
20 words
A method as recited in claim 5 in which said fiber is not moved until said laser is turned off.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-11-21 | 1998-05-23 | 1998-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-21 | 2002-05-23 | 2002-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-21 | 2006-05-23 | 2006-11-22 | $7700.00 | Window Closed / Lapsed |