US4444458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substrate ruggedized optical fiber apparatus
Assignee: Gould Optronics Inc
•
Filing: 1981-05-26
•
Granted: 1984-04-24
•
Expires: 2001-05-26
Abstract
Abstract Optical devices having one or more rigidly supported optical fibers and a method of making thereof are provided in which one or more optical fibers are interfaced with a rigid support material by molecular restructuring of interfacing surface areas of the fibers and the support material. The rigidly supported optical fiber may be fabricated by assembling a longitudinal outer surface portion of the fiber in juxtaposition with a rigid support material having a lower melting point than the fiber. This assembly may be heated to allow partial liquification of the support material and fiber along the outer surface of the fiber to allow fusing therebetween. The assembly may then be cooled below the melting point of the support material to provide a ruggedized fiber-optic assembly comprising an optical fiber fused to a rigid support material. A nonstick mold material also may be provided during assembly which has a substantially higher melting point than either the fiber or the support material. The mold may be placed in juxtaposition with the fiber to prevent the fiber from being totally embedded in the support material. Various optical devices may be formed from combinations of such rigidly supported optical fibers.
Inventors
- 👤 David W. Stowe
- 👤 Paul M. Kopera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:19
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/02; G02B6/02057; G02B6/02061; G02B6/02071; G02B6/02076; G02B6/02209; G02B6/24; G02B6/245; G02B6/26; G02B6/28; G02B6/2804; G02B6/2821; G02B6/2826; G02B6/2835; G02B6/2843; G02B6/36; G02B6/3628; G02B6/3632; G02B6/3644
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
41 words
An optical device comprising: (a) an optical fiber having an outer surface; and (b) a substrate rigidly supporting said optical fiber by forming a molecular interface with a portion of said outer surface while said fiber is maintained in axial tension.
Claim 2
Dependent Claim
41 words
An optical device comprising: (a) an optical fiber having an outer surface; and (b) a substrate rigidly supporting said optical fiber by forming a molecular interface with a portion of said outer surface while said fiber is maintained in axial tension.
Claim 3
Dependent Claim
15 words
An optical device as recited in claim 1, wherein said substrate is formed of glass.
Claim 4
Dependent Claim
39 words
An optical device as recited in claim 2, wherein said glass substrate is substantially thicker than said fiber and said substrate and said fiber have a difference in coefficient of thermal expansion of less than 27.5×10 -7 /° C.
Claim 5
Dependent Claim
24 words
An optical device as recited in claim 1 wherein the softening point of said substrate is lower than the softening point of said fiber.
Claim 6
Dependent Claim
17 words
An optical device as recited in claim 1 wherein said fiber is completely embedded in said substrate.
Claim 7
Dependent Claim
63 words
An optical device as recited in claim 1, wherein a longitudinal portion of said fiber is partially embedded in and fused to said substrate, an axially extending arcuate surface area of said longitudinal portion of said fiber extending outwardly through the periphery of said substrate, said substrate and said fiber having a strain of less than or equal to 5×10 -3 there between.
Claim 8
Dependent Claim
30 words
An optical device as recited in claim 6 wherein said outwardly extending arcuate surface area is defined by a 180° angle extending radially outward from the axis of said fiber.
Claim 9
Dependent Claim
27 words
An optical device as recited in claim 6 wherein said outwardly extending arcuate surface area is defined by an oblique angle extending radially outward from said fiber.
Claim 10
Dependent Claim
24 words
An optical device as recited in claim 1 wherein the refractive index of said substrate is higher than the refractive index of the fiber.
Claim 11
Dependent Claim
24 words
An optical device as recited in claim 1 wherein the refractive index of said substrate is lower than the refractive index of said fiber.
Claim 12
Dependent Claim
29 words
An optical device as recited in claim 1 wherein the difference in coefficients of thermal expansion between said fiber and said substrate is less than 1×10 -5 /° C.
Claim 13
Dependent Claim
22 words
An optical device as recited in claim 1 wherein the coefficient of thermal expansion of said fiber and said substrate are unequal.
Claim 14
Independent Claim
91 words
A method of fabricating a rigidly supported optical fiber device comprising the steps of: (a) assembling a longitudinal, outer-surface portion of an optical fiber in juxtaposition with a rigid support material having a lower viscosity than said fiber; (b) maintaining said fiber in axial tension; (c) heating said assembly so as to allow partial softening of said support material to allow a bonded interface to be formed directly between said fiber and said support material; and (d) cooling said assembly to allow said interface to harden to form a rigid interface.
Claim 15
Independent Claim
91 words
A method of fabricating a rigidly supported optical fiber device comprising the steps of: (a) assembling a longitudinal, outer-surface portion of an optical fiber in juxtaposition with a rigid support material having a lower viscosity than said fiber; (b) maintaining said fiber in axial tension; (c) heating said assembly so as to allow partial softening of said support material to allow a bonded interface to be formed directly between said fiber and said support material; and (d) cooling said assembly to allow said interface to harden to form a rigid interface.
Claim 16
Dependent Claim
18 words
The method of fabrication as recited in claim 13 wherein said rigid support material is a glass substrate.
Claim 17
Dependent Claim
54 words
The method of fabrication as recited in claim 13 further comprising the additional step of biasing said fiber and said support material toward one another during said heating and cooling of said assembly to allow an arcuate portion of said outer surface of said fiber to become embedded in said support material during fusing.
Claim 18
Dependent Claim
44 words
The method of fabrication as recited in claim 13 further comprising the additional step of positioning a mold of nonstick material in juxtaposition with said fiber prior to heating to prevent fusing of said support material about the entire outer surface of said fiber.
Claim 19
Dependent Claim
30 words
The method of fabrication as recited in claim 16 further comprising polishing the nonstick material prior to positioning said material in juxtaposition with said fiber to provide a flat mold.
Claim 20
Dependent Claim
24 words
The method of fabrication as recited in claim 13 wherein heat is applied to said assembly from a heat source positioned below said assembly.
Claim 21
Dependent Claim
24 words
The method of fabrication as recited in claim 13 wherein heat is applied to said assembly from a heat source positioned above said assembly.
Claim 22
Dependent Claim
36 words
The method of fabrication as recited in claim 13 wherein said heating step further includes moving a heating source along the length of said fiber to evenly distribute heat to the fiber and the support material.
Claim 23
Dependent Claim
50 words
An optical device comprising: (a) an optical fiber; and (b) a rigid support material wherein said optical fiber is maintained in axial tension while said optical fiber is positioned asymmetrically with respect to said support material and while said support material is fused to the outer surface of the fiber.
Claim 24
Dependent Claim
50 words
An optical device comprising: (a) an optical fiber; and (b) a rigid support material wherein said optical fiber is maintained in axial tension while said optical fiber is positioned asymmetrically with respect to said support material and while said support material is fused to the outer surface of the fiber.
Claim 25
Dependent Claim
24 words
An optical device as recited in claim 21 wherein said support material has a configuration which varies along a longitudinal portion of the fiber.
Claim 26
Dependent Claim
17 words
An optical device as recited in claim 21 wherein said support material is a rectangularly-shaped glass substrate.
Claim 27
Dependent Claim
15 words
An optical device as recited in claim 21 wherein said fiber is a single-mode fiber.
Claim 28
Dependent Claim
15 words
An optical device as recited in claim 21 wherein said fiber is a multimode fiber.
Claim 29
Dependent Claim
15 words
An optical device as recited in claim 21 wherein said fiber is a polarization-preserving fiber.
Claim 30
Dependent Claim
15 words
An optical device as recited in claim 21 wherein said fiber is a hollow-core fiber.
Claim 31
Dependent Claim
15 words
An optical device as recited in claim 21 wherein said fiber is a gradient-index fiber.
Claim 32
Dependent Claim
15 words
An optical device as recited in claim 21 wherein said fiber is a stepped-index fiber.
Claim 33
Dependent Claim
22 words
An optical device as recited in claim 21 wherein said fiber has a melting point higher than that of said support material.
Claim 34
Dependent Claim
22 words
An optical device as recited in claim 21 further comprising alignment means for positioning said fiber with respect to said support material.
Claim 35
Dependent Claim
23 words
An optical device as recited in claim 21 further comprising means for molding said support material about a longitudinal portion of said fiber.
Claim 36
Dependent Claim
85 words
An optical device, comprising: (a) an optical fiber; (b) a rigid glass support material; and (c) an interface region in which said support material is fused directly to an outer surface portion of said optical fiber, at least one of said fiber and said support material being provided with a diffusible constituent which diffuses into the other material as said support material and said outer surface portion are fused together in said interface region to provide an optical device being capable of relatively uniform etching.
Claim 37
Dependent Claim
85 words
An optical device, comprising: (a) an optical fiber; (b) a rigid glass support material; and (c) an interface region in which said support material is fused directly to an outer surface portion of said optical fiber, at least one of said fiber and said support material being provided with a diffusible constituent which diffuses into the other material as said support material and said outer surface portion are fused together in said interface region to provide an optical device being capable of relatively uniform etching.
Claim 38
Dependent Claim
19 words
An optical device as recited in claim 33, wherein said glass support material is substantially thicker than said fiber.
Claim 39
Dependent Claim
26 words
An optical device as recited in claim 33, wherein the softening point of said rigid support material is lower than the softening point of said fiber.
Claim 40
Dependent Claim
18 words
The optical device as recited in claim 33, wherein said fiber is completely embedded in said support material.
Claim 41
Dependent Claim
47 words
An optical device as recited in claim 33, wherein a longitudinal portion of the fiber is partially embedded in and bonded to said support material, an axially extending arcuate surface area of said longitudinal portion of said fiber extending outwardly through the periphery of said support material.
Claim 42
Dependent Claim
20 words
An optical device as recited in claim 33, wherein said support material is provided with boron as a diffusible constituent.
Claim 43
Dependent Claim
32 words
An optical device as recited in claim 38, wherein said boron from said support material has diffused into an outer bonding surface of said optical fiber by a distance of 5 Å.
References Cited (Backward Citations)
US3860405A
Cited
US3936631A
Cited
US3982123A
Cited
JPS5214430A
Cited
JPS5315149A
Cited
JPS5391752A
Cited
US4214810A
Cited
JPS54101334A
Cited
US4325636A
Cited
US4315666A
Cited
US4375312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-24 | 1987-10-24 | 1988-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-24 | 1991-10-24 | 1992-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-24 | 1995-10-24 | 1996-04-24 | $7700.00 | Window Closed / Lapsed |