EP0256809A2
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EP
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Optical fiber transmission system having dispersion transformer
Assignee: Corning Glass Works
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Filing: 1987-08-07
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Granted: —
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Expires: 2007-08-07
Abstract
Abstract An optical transmission system is described wherein light is transmitted from a transmitter (Tx) to a receiver (Rx) by at least one transmission optical fiber (22). The system includes a dispersion transformer which receives light from one of the components, compensates for or transforms the delay distortion of the various wavelengths transmitted through the system, and provides the next component in the system with a compensated or transformed light beam. The dispersion transformer comprises means (20, 21) for receiving light from one of the components and dispersing/separating the light into a plurality of spatially separated beams (23-26) which are directed onto the endface (29) of a multimode optical fiber (28). The position of each beam on that endface is a function of the velocity with which the light that forms the beam propagates through the transmission optical fiber (22). The multimode fiber 28 comprises a plurality of light-conducting channels, adjacent ones of which are separated by cladding regions having refractive indices lower than those of the adjacent light-conducting channels.
Inventors
- 👤 Venkata Adiseshaiah Bhagavatula
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 15:54
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/02; G02B6/036; G02B6/03616; G02B6/03688; G02B6/028; G02B6/0286; G02B6/26; G02B6/262; G02B6/28; G02B6/293; G02B6/29304; G02B6/29305; G02B6/29307; G02B6/2931; G02B6/29379; G02B6/29392; G02B6/29394; G02B6/42; G02B6/4201; G02B6/4204; G02B6/4215; H; H04; H04B; H04B10/00; H04B10/25; H04B10/2507; H04B10/2513; H04B10/25133
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
81 words
An optical fiber transmission system dispersion transformer comprising a multimode optical waveguide having an input endface and an output endface, and means for dispersing a light beam into a plurality of spatially separated beams and for directing said beams onto a portion of said input endface, said multimode optical waveguide being characterized in that it comprises a plurality of light-conducting channels, adjacent ones of which are separated by cladding regions having refractive indices lower than those of said light conducting regions.
Claim 2
Dependent Claim
81 words
An optical fiber transmission system dispersion transformer comprising a multimode optical waveguide having an input endface and an output endface, and means for dispersing a light beam into a plurality of spatially separated beams and for directing said beams onto a portion of said input endface, said multimode optical waveguide being characterized in that it comprises a plurality of light-conducting channels, adjacent ones of which are separated by cladding regions having refractive indices lower than those of said light conducting regions.
Claim 3
Dependent Claim
50 words
A dispersion transformer in accordance with claim 1 wherein said multimode optical waveguide is a planar structure having a substrate on which there is disposed a plurality of light conducting laminae, adjacent ones of which are separated by a cladding lamina of lower refractive index than said light conducting laminae.
Claim 4
Dependent Claim
29 words
A dispersion transformer in accordance with claim 1 wherein said multimode optical waveguide is an optical fiber azimuthally symmetrical, whereby said plurality of light-conducting channels are annular in cross-section.
Claim 5
Dependent Claim
25 words
A dispersion transformer in accordance with claim 1 wherein said multimode optical waveguide is a slab-type optical fiber in which said channels are parallel laminae.
Claim 6
Dependent Claim
16 words
A dispersion transformer in accordance with claim 1 wherein said light-conducting channels are rectangular in cross-section.
Claim 7
Dependent Claim
27 words
A dispersion transformer in accordance with claim 3 or 4 wherein adjacent ones of said plurality of light-conducting channels have different peak refractive indices, or different thicknesses.
Claim 8
Dependent Claim
22 words
A dispersion transformer in accordance with any one of claims 1-6 wherein all of said cladding regions have the same refractive index.
Claim 9
Dependent Claim
22 words
A dispersion transformer in accordance with any one of claims 1-6 wherein adjacent ones of said cladding regions have different refractive indices.
Claim 10
Dependent Claim
38 words
A dispersion transformer in accordance with any one of claims 1-6 wherein the refractive index profiles of at least one of said light-conducting channels is graded so that all modes are propagated therethrough with substantially the same delay.
Claim 11
Dependent Claim
169 words
In an optical transmission system comprising the serial arrangement of the following components a light source, a light detector, at least one transmission optical fiber connected between said source and detector, and a dispersion transformer disposed between any two of the aforementioned components, said dispersion transformer comprising a multimode optical fiber, means receiving light from one of said components and dispersing said light into a plurality of spatially separated beams, the position of each said beam being a function of the velocity with which the light that forms said beam propagates through said at least one transmission optical fiber, said means for receiving also directing said beams onto a portion of an input endface of said multimode fiber, the light emanating from said multimode fiber being coupled to the next adjacent component of said system, said multimode optical fiber being characterized in that it comprises a plurality of light-conducting channels, adjacent ones of which are separated by cladding regions having refractive indices lower than those of said light-conducting channels.
Claim 12
Dependent Claim
169 words
In an optical transmission system comprising the serial arrangement of the following components a light source, a light detector, at least one transmission optical fiber connected between said source and detector, and a dispersion transformer disposed between any two of the aforementioned components, said dispersion transformer comprising a multimode optical fiber, means receiving light from one of said components and dispersing said light into a plurality of spatially separated beams, the position of each said beam being a function of the velocity with which the light that forms said beam propagates through said at least one transmission optical fiber, said means for receiving also directing said beams onto a portion of an input endface of said multimode fiber, the light emanating from said multimode fiber being coupled to the next adjacent component of said system, said multimode optical fiber being characterized in that it comprises a plurality of light-conducting channels, adjacent ones of which are separated by cladding regions having refractive indices lower than those of said light-conducting channels.
References Cited (Backward Citations)
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