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US5045364A
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US
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Nonlinear optical devices and methods
Assignee: Nokia Bell Labs
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Filing: 1990-05-18
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Granted: 1991-09-03
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Expires: 2010-05-18
Abstract
Abstract Optically nonlinear device elements such as directional couplers, switches, frequency stabilizers, optical parameters devices and modulators use as an optically nonlinear element a cross-linked triazine polymer containing a covalently bonded optically nonlinear dye moiety. A specific cross-linked triazine with this dye moiety may be made by cyclotrimerizing a p-(N,N-bis(4'-cyanatobenzyl)amino-p'-(2,2-dicyanovinyl)azobenzene monomer. During polycyclotrimerization or cure, the element is subjected to a poling voltage which aligns the dipoles of the dye moiety to give a large useful nonlinear susceptibility.
Inventors
- 👤 Treliant Fang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:46
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3615; G02F1/3616; C; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/30; C07D251/34; C08; C08G; C08G73/00; C08G73/06; C08G73/0622; C08G73/0638; C08G73/065; C08G73/0655; G02F1/3611; G02F1/3612; Y; Y10; Y10T; Y10T428/00; Y10T428/31504
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
96 words
A method for making a nonlinear optical device comprising the steps of: synthesizing a monomer containing a dye moiety; cyclotrimerizing the monomer in solution form to make a triazine oligomer solution; spreading the oligomer solution on a substrate; polycyclotrimerizing the oligomer in the presence of an electric field of sufficient intensity to align dipoles of the dye moiety, thereby to form an optically nonlinear film of cross-linked triazine on the substrate; and defining an optical input means at one part of the triazine film and an optical output means at another part of the triazine film.
Claim 2
Independent Claim
96 words
A method for making a nonlinear optical device comprising the steps of: synthesizing a monomer containing a dye moiety; cyclotrimerizing the monomer in solution form to make a triazine oligomer solution; spreading the oligomer solution on a substrate; polycyclotrimerizing the oligomer in the presence of an electric field of sufficient intensity to align dipoles of the dye moiety, thereby to form an optically nonlinear film of cross-linked triazine on the substrate; and defining an optical input means at one part of the triazine film and an optical output means at another part of the triazine film.
Claim 3
Dependent Claim
18 words
The method of claim 1 to wherein: the monomer is of the form shown in FIG. 9 hereof.
Claim 4
Dependent Claim
10 words
The method of claim 2 wherein: the monomer is p-(N,N-bis(4'-cyananatobenzyl)amino)-p'-(2,2dicyanovinyl)azobenzene.
Claim 5
Dependent Claim
17 words
The method of claim 3 wherein: the monomer is made by the process of FIG. 6 hereof.
Claim 6
Dependent Claim
13 words
The method of claim 1 wherein: the dye moiety is a dicyanovinylazo moiety.
Claim 7
Dependent Claim
24 words
The method of claim 1 wherein: the spreading step comprises spinning the oligomer solution to a thickness of one micron to two hundred microns.
Claim 8
Dependent Claim
11 words
A nonlinear optical device made by the method of claim 1.
References Cited (Backward Citations)
US4859876A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-02 | 1995-03-04 | 1995-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-02 | 1999-03-04 | 1999-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-02 | 2003-03-04 | 2003-09-03 | $7700.00 | Window Closed / Lapsed |