Patent US4892374A successfully refreshed from Google Patents.
US4892374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Article comprising an opto-electronic device and an optical waveguide coupled thereto, and method of making the article
Assignee: Nokia Bell Labs
•
Filing: 1988-03-03
•
Granted: 1990-01-09
•
Expires: 2008-03-03
Abstract
Abstract A method for aligning an opto-electronic device such as a semiconductor laser to a waveguide on a substrate is disclosed. The method comprises placing the device onto the substrate such that it is in rough alignment with the waveguide, optically pumping the device such that the device emits electromagnetic radiation, with some of the emitted radiation being coupled into the waveguide and detected by appropriate means. If indicated by the detector signal, the position of the device is then adjusted until the desired degree of coupling is attained, whereupon the device is mechanically secured to the substrate and appropriate electrical connections made between device and substrate. Devices useful in the practice of the method typically comprise a window in their top metallization layer.
Inventors
- 👤 David A. Ackerman
- 👤 Louis A. Koszi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:18
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/26; G02B6/30; G02B6/42; G02B6/4201; G02B6/4219; G02B6/422; G02B6/4225; G02B6/4221; G02B6/4228
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
161 words
A method of manufacturing an article comprising a substrate, with an opto-electronic device and an optical waveguide on the substrate, the method comprising (a) securing the device to the substrate such that the device and the waveguide are in a relative position adapted for coupling radiation from the device into the waveguide and/or from the waveguide into the device; and (b) providing means for making electrical contact to the device; characterized in that the device is capable of photoluminescence, and in that the method further comprises (c) exposing, prior to a) and prior to completing electrical contact between the opto-electronic device and the substrate, the device to pump radiation such that the device is caused to emit electromagnetic radiation by photoluminescence; and (d) detecting at least some of the radiation emitted by the device and (e) adjusting the relative position of the device and the waveguide such that a desired degree of optical coupling between the device and the waveguide results.
Claim 2
Independent Claim
161 words
A method of manufacturing an article comprising a substrate, with an opto-electronic device and an optical waveguide on the substrate, the method comprising (a) securing the device to the substrate such that the device and the waveguide are in a relative position adapted for coupling radiation from the device into the waveguide and/or from the waveguide into the device; and (b) providing means for making electrical contact to the device; characterized in that the device is capable of photoluminescence, and in that the method further comprises (c) exposing, prior to a) and prior to completing electrical contact between the opto-electronic device and the substrate, the device to pump radiation such that the device is caused to emit electromagnetic radiation by photoluminescence; and (d) detecting at least some of the radiation emitted by the device and (e) adjusting the relative position of the device and the waveguide such that a desired degree of optical coupling between the device and the waveguide results.
Claim 3
Dependent Claim
24 words
Method of claim 1, wherein the substrate comprises a Si body and the optical waveguide is a planar waveguide formed on the Si body.
Claim 4
Dependent Claim
23 words
Method of claim 2, comprising providing on the substrate means for detecting the radiation emitted by the device and coupled into the waveguide.
Claim 5
Dependent Claim
33 words
Method of claim 2, wherein the opto-electronic device is a semiconductor laser, and wherein the article further comprises an optical fiber attached to the Si body in coupling relationship with the planar waveguide.
Claim 6
Dependent Claim
24 words
Method of claim 1, wherein the substrate comprises a Si body and the optical waveguide is an optical fiber attached to the Si body.
Claim 7
Dependent Claim
26 words
Method of claim 1, wherein the opto-electronic device is a semiconductor laser, a semiconductor light emitting diode, a semiconductor optical amplifier, or a semiconductor radiation detector.
Claim 8
Dependent Claim
111 words
An article comprising a substrate, with an optoelectronic device and an optical waveguide on the substrate, the device comprising a semiconductor body and at least one metallization layer at least partly covering a major surface of the semiconductor body, characterized in that (a) the device is mounted on the substrate in a position adapted for coupling radiation from the device into the waveguide and/or from the waveguide into the device; and (b) the metallization layer comprises a window such that pump radiation can be transmitted into the semiconductor body, whereby the device can be caused to emit radiation by photoluminescence, with at least some of the radiation coupled into the waveguide.
Claim 9
Dependent Claim
111 words
An article comprising a substrate, with an optoelectronic device and an optical waveguide on the substrate, the device comprising a semiconductor body and at least one metallization layer at least partly covering a major surface of the semiconductor body, characterized in that (a) the device is mounted on the substrate in a position adapted for coupling radiation from the device into the waveguide and/or from the waveguide into the device; and (b) the metallization layer comprises a window such that pump radiation can be transmitted into the semiconductor body, whereby the device can be caused to emit radiation by photoluminescence, with at least some of the radiation coupled into the waveguide.
References Cited (Backward Citations)
US4119363A
Cited
US4144504A
Cited
US4186994A
Cited
US4411057A
Cited
US4210923A
Cited
US4349906A
Cited
US4326771A
Cited
US4296998A
Cited
US4466009A
Cited
JPS57198678A
Cited
US4500165A
Cited
US4729618A
Cited
US4647331A
Cited
US4744626A
Cited
US4760568A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-08 | 1993-07-10 | 1994-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-08 | 1997-07-10 | 1998-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-08 | 2001-07-10 | 2002-01-09 | $7700.00 | Window Closed / Lapsed |