Patent US3469305A successfully refreshed from Google Patents.
Patent US4767430A successfully refreshed from Google Patents.
US4767430A
Expired / Lapsed
US
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Optical fiber-device interconnection and method
Assignee: Corning Glass Works
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Filing: 1985-08-15
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Granted: 1988-08-30
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Expires: 2005-08-15
Abstract
Abstract A method of preparing an optical device for alignment with a light beam emitter or receiver. The optical device is formed of a first glass that is resistant to dissolving in a given solvent. Extending through the device is an optical waveguide at least the cladding of which is soluble in the given solvent. At least one end of the device is immersed in the solvent to dissolve the end portion of the fiber and form a well. An optical fiber is inserted into the well where it is aligned with the fiber extending through the device.
Inventors
- 👤 Charles W. Deneka
- 👤 Donald B. Keck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:16
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; C; C03; C03B; C03B37/00; C03B37/01; C03B37/012; C03B37/01205; C03B37/01211; C03B23/00; C03B23/04; C03B23/047; C03B23/0473; G02B6/26; G02B6/262; G02B6/32; G02B6/36; G02B6/38; G02B6/3801; G02B6/3803; G02B6/42; G02B6/4201; G02B6/4202; G02B6/4203; G02B6/4216; G02B6/4218; G02B6/4219; G02B6/4228; G02B6/423
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
140 words
A method of making an optical device having a well that is adapted to receive a corresponding protrusion on another optical device, said method comprising the steps of providing an optical device formed of a matrix glass that is resistant to dissolving in a given solvent, said device having at least one optical waveguide extending longitudinally therethrough and intersecting at least a first surface of said optical device, said at least one optical waveguide comprising an elongated glass core surrounded by a layer of cladding glass that is soluble in said given solvent, and immersing in a bath of said solvent at least that end of said device having said surface to remove that portion of said cladding glass which is exposed to said solvent to a depth sufficient to form a well the dimensions of which accommodate said protrusion.
Claim 2
Independent Claim
140 words
A method of making an optical device having a well that is adapted to receive a corresponding protrusion on another optical device, said method comprising the steps of providing an optical device formed of a matrix glass that is resistant to dissolving in a given solvent, said device having at least one optical waveguide extending longitudinally therethrough and intersecting at least a first surface of said optical device, said at least one optical waveguide comprising an elongated glass core surrounded by a layer of cladding glass that is soluble in said given solvent, and immersing in a bath of said solvent at least that end of said device having said surface to remove that portion of said cladding glass which is exposed to said solvent to a depth sufficient to form a well the dimensions of which accommodate said protrusion.
Claim 3
Dependent Claim
37 words
A method in accordance with claim 1 wherein the step of immersing results in a well having a protrusion of said core glass in the center thereof, said method further comprising the step of removing said protrusion.
Claim 4
Independent Claim
138 words
A method of forming optical fiber alignment wells in an optical device comprising the steps of providing an optical device formed of a matrix glass that is resistant to dissolving in a given solvent, said device having at least two optical waveguides extending longitudinally therethrough, each of said optical waveguides comprising an elongated glass core surrounded by a layer of cladding glass that is soluble in said given solvent, and immersing at least one end of said device into a bath of said solvent to remove that portion of said cladding glass which is exposed to said solvent and thereby form in said at least one end a well at the end of each optical waveguide, the step of immersing being continued until said wells are sufficiently deep that the ends of optical fibers can be inserted therein.
Claim 5
Independent Claim
138 words
A method of forming optical fiber alignment wells in an optical device comprising the steps of providing an optical device formed of a matrix glass that is resistant to dissolving in a given solvent, said device having at least two optical waveguides extending longitudinally therethrough, each of said optical waveguides comprising an elongated glass core surrounded by a layer of cladding glass that is soluble in said given solvent, and immersing at least one end of said device into a bath of said solvent to remove that portion of said cladding glass which is exposed to said solvent and thereby form in said at least one end a well at the end of each optical waveguide, the step of immersing being continued until said wells are sufficiently deep that the ends of optical fibers can be inserted therein.
Claim 6
Dependent Claim
124 words
A method in accordance with claim 3 wherein the step of providing a device comprises forming a coupler preform having a plurality of glass optical fiber preform rods extending longitudinally through said matrix glass, heating and stretching said preform to form a glass rod, severing said rod into a plurality of units in which the fibers are flush with the endfaces thereof, applying heat to the central region of each of said units, and pulling one end of each of said units relative to the other to elongate and taper inwardly the heated central region thereof, whereby the cores of said unit are more closely spaced and are of smaller diameter at said central region than they are at the ends of said units.
Claim 7
Independent Claim
156 words
A method of aligning an optical fiber with respect to an optical device comprising the steps of providing an optical device formed of a matrix glass that is resistant to dissolving in a given solvent, said device having at least two optical waveguides extending longitudinally therethrough, each of said optical waveguides comprising an elongated glass core surrounded by a layer of cladding glass that is soluble in said given solvent, immersing at least one end of said device into a bath of said solvent to remove that portion of said cladding glass which is exposed to said solvent and thereby form in said at least one end a well at the end of each optical waveguide, the step of immersing being continued until said wells are sufficiently deep that the ends of optical fibers can be inserted therein, providing a plurality of optical fibers, and inserting one of said optical fibers into each of said wells.
Claim 8
Independent Claim
156 words
A method of aligning an optical fiber with respect to an optical device comprising the steps of providing an optical device formed of a matrix glass that is resistant to dissolving in a given solvent, said device having at least two optical waveguides extending longitudinally therethrough, each of said optical waveguides comprising an elongated glass core surrounded by a layer of cladding glass that is soluble in said given solvent, immersing at least one end of said device into a bath of said solvent to remove that portion of said cladding glass which is exposed to said solvent and thereby form in said at least one end a well at the end of each optical waveguide, the step of immersing being continued until said wells are sufficiently deep that the ends of optical fibers can be inserted therein, providing a plurality of optical fibers, and inserting one of said optical fibers into each of said wells.
Claim 9
Dependent Claim
19 words
A method in accordance with claim 5 further comprising the step of bonding said optical fibers to said device.
Claim 10
Dependent Claim
124 words
A method in accordance with claim 5 wherein the step of providing a device comprises forming a coupler preform having a plurality of glass optical fiber preform rods extending longitudinally through said matrix glass, heating and stretching said preform to form a glass rod, severing said rod into a plurality of units in which the fibers are flush with the endfaces thereof, applying heat to the central region of each of said units, and pulling one end of each of said units relative to the other to elongate and taper inwardly the heated central region thereof, whereby the cores of said unit are more closely spaced and are of smaller diameter at said central region than they are at the ends of said units.
Claim 11
Dependent Claim
19 words
A method in accordance with claim 7 further comprising the step of bonding said optical fibers to said device.
References Cited (Backward Citations)
US3253896A
Cited
US3579316A
Cited
US4011007A
Cited
US3819442A
Cited
US3883353A
Cited
DE2358881A1
Cited
GB1493992A
Cited
US4392712A
Cited
US4291940A
Cited
US4666236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-30 | 1992-02-29 | 1992-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-30 | 1996-02-29 | 1996-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-30 | 2000-02-29 | 2000-08-30 | $7700.00 | Window Closed / Lapsed |