Patent US5299054A successfully refreshed from Google Patents.
US5299054A
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Optical switch
Assignee: Lasen Inc
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Filing: 1992-04-14
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Granted: 1994-03-29
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Expires: 2012-04-14
Abstract
Abstract An optical medium, which may be nonlinear, is provided with a matrix of conductors ("select lines") parallel to a face (planar surface) of the optical medium. The select lines are preferably superconductive, and are arranged in a two offset planar, preferably orthogonal sets. Adjacent pairs of select lines in both sets of select lines define discrete volumes, or "cells" within the optical medium. Light directed through the cells is refracted at angles determined by the quiescent optical properties of the optical medium, and may be "steered" to different angles by current passing through the select lines.
Inventors
- 👤 Allen R. Geiger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:16
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/26; G02B6/27; G02B6/2753; G02B6/2766; G02B6/2706; G02B6/2713; G02F; G02F1/00; G02F1/29; G02F1/292; G11; G11B; G11B7/00; G11B7/002; G11B7/0033; G11B7/12; G11B7/125; G11B7/128; G02B6/35; G02B6/354; G02B6/3554; G02B6/3556
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
136 words
An optical switch, comprising: a substrate having an input face and an output face opposite the input face; a first set of conductors parallel to one another and disposed in a first plane generally parallel to one face of the substrate; a second set of conductors parallel to one another and disposed in a second plane substantially parallel to the first plane, each of said first set of conductors and each of said second set of conductors being substantially perpendicular to each other; and a plurality of refractive cells, wherein each refractive cell is defined by a volumetric space between an adjacent pair of said first set of conductors and an adjacent pair of said second set of conductors, further wherein each refractive cell is configured for refracting an input light beam at a select angle.
Claim 2
Dependent Claim
136 words
An optical switch, comprising: a substrate having an input face and an output face opposite the input face; a first set of conductors parallel to one another and disposed in a first plane generally parallel to one face of the substrate; a second set of conductors parallel to one another and disposed in a second plane substantially parallel to the first plane, each of said first set of conductors and each of said second set of conductors being substantially perpendicular to each other; and a plurality of refractive cells, wherein each refractive cell is defined by a volumetric space between an adjacent pair of said first set of conductors and an adjacent pair of said second set of conductors, further wherein each refractive cell is configured for refracting an input light beam at a select angle.
Claim 3
Dependent Claim
22 words
An optical switch according to claim 1, further comprising: a plurality of input channels defined on the input face of the substrate.
Claim 4
Dependent Claim
20 words
An optical switch according to claim 2, wherein the number of input channels is fewer than the number of cells.
Claim 5
Dependent Claim
23 words
An optical switch according to claim 1, further comprising: a plurality of output light paths defined on the output face of the substrate.
Claim 6
Dependent Claim
19 words
An optical switch according to claim 4, wherein the number of output paths corresponds to the number of cells.
Claim 7
Dependent Claim
22 words
An optical switch according to claim 1, further comprising: a bundle of optical fibers positioned on the output surface of the substrate.
Claim 8
Dependent Claim
18 words
An optical switch according to claim 2, further comprising: means for providing coherent light to the input channels.
Claim 9
Dependent Claim
30 words
An optical switch according to claim 1, further comprising: means for creating electromagnetic flux densities in the conductors defining a cell sufficient to alter the refractive index of a cell.
Claim 10
Dependent Claim
16 words
An optical switch according to claim 8, wherein the conductors are formed of a superconductive material.
Claim 11
Dependent Claim
27 words
An optical switch according to claim 1, wherein the substrate is formed of at least one of lanthanum Borate, iron doped Lithium Niobate or suitable photorefractive material.
Claim 12
Dependent Claim
15 words
An optical switch according to claim 1, wherein the substrate is formed of Lithium Triborate.
Claim 13
Dependent Claim
57 words
An optical switch according to claim 1, wherein: the faces of the substrate measure about one half inch on a side; the number of conductors in the first set is approximately 200; the number of conductors in the second set is approximately 200; and approximately 40,000 cells are formed by pairs of the two sets of conductors.
Claim 14
Dependent Claim
97 words
An optical switching system for selectively directing light signals from a plurality of input paths to a plurality of output paths, said optical switching system comprising: an optical switch having first and second sides and means for selectively directing light signals passing between said first and second sides; means for optically coupling said plurality of input and output paths to said first side of said optical switch; and reflecting means positioned adjacent said second side of said optical switch for reflecting signals passing out of said optical switch back through said optical switch to said output paths.
Claim 15
Dependent Claim
97 words
An optical switching system for selectively directing light signals from a plurality of input paths to a plurality of output paths, said optical switching system comprising: an optical switch having first and second sides and means for selectively directing light signals passing between said first and second sides; means for optically coupling said plurality of input and output paths to said first side of said optical switch; and reflecting means positioned adjacent said second side of said optical switch for reflecting signals passing out of said optical switch back through said optical switch to said output paths.
Claim 16
Dependent Claim
35 words
An optical switching system as claimed in claim 13 wherein said input and output paths respectively comprise input and output optical fibers, said input and output optical fibers being located within a single optical cable.
Claim 17
Dependent Claim
34 words
An optical switching system as claimed in claim 13 wherein said input and output paths respectively comprise input and output optical fibers, said input and output optical fibers being located within different optical cables.
Claim 18
Dependent Claim
72 words
An optical switching system as claimed in claim 15 further including: first polarizing means for polarizing light signals from said input paths into a first polarization; second polarizing means for polarizing light signals to be directed to said output paths into a second polarization; separation means for separating light having said second polarization from light having said first polarization and for directing light having said second polarization to said output optical fibers.
Claim 19
Dependent Claim
46 words
An optical switching system as claimed in claim 16 wherein said optical switch includes: an optical medium having a refractive index; means for locally altering the refractive index of the optical medium in selected volumetric areas; and means for passing light through the selected volumetric areas.
Claim 20
Dependent Claim
109 words
An optical switching system as claimed in claim 16 wherein said optical switch includes: a substrate having a first face corresponding to said first side and a second face opposite the first face, said second face corresponding to said second side; a first set of conductors parallel to one another and disposed in a first plane generally parallel to one face of the substrate; a second set of conductors parallel to one another and disposed in a second plane substantially parallel to the first plane; and a plurality of refractive cells defined in the volumetric space between adjacent pairs of conductors in the first and second sets of conductors.
Claim 21
Dependent Claim
116 words
An optical switching system as claimed in claim 15 further including: first linear polarizing means for polarizing a light signal from one of said input paths in a linear manner to generate a first linearly polarized signal; first circular polarizing means for polarizing said linearly polarized signal in a circularly polarized manner to generate a first circularly polarized signal; reverse polarization means for reversing the polarization of said first circularly polarized signal to generate a second circularly polarized signal; second linear polarizing means for polarizing said second circularly polarized signal in a linear manner to generate a second linearly polarized signal; beam splitting means for directing said second linearly polarized signal to said output optical fibers.
Claim 22
Dependent Claim
37 words
An optical switching system as claimed in claim 19 wherein said first circular polarizing means and said second linear polarizing means comprise a quarter wave rhomboidal prism and wherein said reverse polarization means comprises said reflecting means.
Claim 23
Dependent Claim
46 words
An optical switching system as claimed in claim 19 wherein said optical switch includes: an optical medium having a refractive index; means for locally altering the refractive index of the optical medium in selected volumetric areas; and means for passing light through the selected volumetric areas.
Claim 24
Dependent Claim
109 words
An optical switching system as claimed in claim 19 wherein said optical switch includes: a substrate having a first face corresponding to said first side and a second face opposite the first face, said second face corresponding to said second side; a first set of conductors parallel to one another and disposed in a first plane generally parallel to one face of the substrate; a second set of conductors parallel to one another and disposed in a second plane substantially parallel to the first plane; and a plurality of refractive cells defined in the volumetric space between adjacent pairs of conductors in the first and second sets of conductors.
Claim 25
Dependent Claim
46 words
An optical switching system as claimed in claim 13 wherein said optical switch includes: an optical medium having a refractive index; means for locally altering the refractive index of the optical medium in selected volumetric areas; and means for passing light through the selected volumetric areas.
Claim 26
Dependent Claim
109 words
An optical switching system as claimed in claim 13 wherein said optical switch includes: a substrate having a first face corresponding to said first side and a second face opposite the first face, said second face corresponding to said second side; a first set of conductors parallel to one another and disposed in a first plane generally parallel to one face of the substrate; a second set of conductors parallel to one another and disposed in a second plane substantially parallel to the first plane; and a plurality of refractive cells defined in the volumetric space between adjacent pairs of conductors in the first and second sets of conductors.
References Cited (Backward Citations)
US3449038A
Cited
US3363103A
Cited
US3614200A
Cited
US3900247A
Cited
US4229071A
Cited
US4222638A
Cited
US4641923A
Cited
US4405869A
Cited
US4569573A
Cited
US4614408A
Cited
US4636799A
Cited
US4958914A
Cited
US5071232A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-03-28 | 1997-09-27 | 1998-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-28 | 2001-09-27 | 2002-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-28 | 2005-09-27 | 2006-03-29 | $7700.00 | Window Closed / Lapsed |