EP0250824A1
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EP
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Integrated optic multi-demultiplexer
Assignee: Polaroid Corp
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Filing: 1987-05-18
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Granted: —
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Expires: 2007-05-18
Abstract
Abstract Integrated optic devices incorporating echelon gratings suitable for use in performing multi/demultiplexing functions in optical communications systems. The echelon gratings can be either reflection or transmissive types and are conveniently formed using conventional photolithographic techniques.
Inventors
- 👤 Amaresh Mahapatra
- 👤 Donald H. Mcmahon
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 19:08
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/10; G02B6/12; G02B6/12007; G02B6/122; G02B6/124; G02B6/24; G02B6/26; G02B6/28; G02B6/293; G02B6/29304; G02B6/29316; G02B6/29325; G02B6/29326; G02B6/29328; G02B6/29379; G02B6/2938
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
75 words
An integrated optic device comprising a thin, planar substrate made of a transparent dielectric material and having integrally formed therein an echelon grating and means for irradiating said echelon grating with electromagnetic radiation within a given bandwidth to diffract said radiation into components of different wavelength angularly dispersed with respect to one another so that at a predetermined distance away from said echelon grating said components are spatially separated for individual coupling and subsequent use.
Claim 2
Dependent Claim
75 words
An integrated optic device comprising a thin, planar substrate made of a transparent dielectric material and having integrally formed therein an echelon grating and means for irradiating said echelon grating with electromagnetic radiation within a given bandwidth to diffract said radiation into components of different wavelength angularly dispersed with respect to one another so that at a predetermined distance away from said echelon grating said components are spatially separated for individual coupling and subsequent use.
Claim 3
Dependent Claim
21 words
The integrated optic device of claim 1, wherein said echelon grating is oriented perpendicularly to the major plane of said substrate.
Claim 4
Dependent Claim
13 words
The integrated optic device of claim 2 wherein said echelon grating is reflective.
Claim 5
Dependent Claim
20 words
The integrated optic device of claim 3 wherein said reflective echelon grating is curved to provide it with focusing properties.
Claim 6
Dependent Claim
20 words
The integrated optic device of claim 4 wherein said reflective echelon grating is curved in the form of a circle.
Claim 7
Dependent Claim
13 words
The integrated optic device of claim 1 wherein said echelon grating is transmissive.
Claim 8
Dependent Claim
17 words
The integrated optic device of claim 1 wherein said device is fabricated using photolithographic and etching techniques.
Claim 9
Dependent Claim
68 words
The integrated optic device of claim 1 wherein said means for irradiating said echelon grating comprises: a) at least one waveguide integrally formed in said device and structured to propagate said given bandwidth of electromagnetic radiation; and b) at least one lens region integrally formed within said device between said waveguide and said echelon grating to accept radiation from said waveguide and direct it onto said echelon grating.
Claim 10
Dependent Claim
13 words
The integrated optic device of claim 1 wherein said echelon grating is transmissive.
Claim 11
Dependent Claim
17 words
The integrated optic device of claim 1 wherein said device is fabricated using photolithographic and etching techniques.
References Cited (Backward Citations)
EP0121812A2
Cited
EP0149270A2
Cited
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