US5022738A
Expired / Lapsed
US
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Optical fiber nonlinear wavelength modulator device
Assignee: Pioneer Corp
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Filing: 1990-09-26
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Granted: 1991-06-11
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Expires: 2010-09-26
Abstract
Abstract A fiber wavelength modulator device which emits a secondary harmonic component by Cerenkov radiation, including a core being a single crystal of a non-linear optical material and a cladding being composed of glass, wherein the relative difference between the core and the cladding has a refraction index with respect to an incident beam, of at lesat 0.015.
Inventors
- 👤 Naota Uenishi
- 👤 Takafumi Uemiya
- 👤 Akira Mizoguchi
- 👤 Yasuji Ogaki
- 👤 Yasuhiro Hattori
- 👤 Teruo Tohma
- 👤 Kiyofumi Chikuma
- 👤 Sota Okamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:15
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/35; G02F1/37; G02F1/377; G02F1/383
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
57 words
A fiber wavelength modulator device which emits a secondary harmonic component by Cerenkov radiation, comprising: a core being a single crystal of a non-linear optical material; and a cladding being composed of glass, wherein the relative difference between said core and said cladding has a refraction index with respect to an incident beam, of at least 0.015.
Claim 2
Dependent Claim
57 words
A fiber wavelength modulator device which emits a secondary harmonic component by Cerenkov radiation, comprising: a core being a single crystal of a non-linear optical material; and a cladding being composed of glass, wherein the relative difference between said core and said cladding has a refraction index with respect to an incident beam, of at least 0.015.
Claim 3
Dependent Claim
68 words
A wavelength modulator device as claimed in claim 1, wherein said single crystal comprises: an organic non-linear optical material selected from the group consisting of: (1) 3,5-dimethyl-1(4-nitrophenyl)pyrazole, (2) 4,5-dimethyl-1,3-dithiol-2-ylidenecyanoacetate, (3) 3-(2-cyano-2-ethoxycarbonylvinyl)indole, (4) 2-methyl-4-nitroaniline, (5) 4-(N,N-dimethylamino)-3-acetamidonitrobenzene, (6) 4'-nitrobenzylidene-3-acetamino-4-methoxyaniline, (7) a molecular salt comprising 4-(4'-hydroxystyryl)-1methylpyridium as the cation and 4-toluenesulfonate as the anion, (8) a molecular salt comprising 4-(4'-chlorostyryl)-1-methylpyridium as the cation and 4-toluenesulfonate as the anion, and (9) 4-bromo-4'-methoxycalcon.
Claim 4
Dependent Claim
16 words
A wavelength modulator device as claimed in claim 1 wherein said cladding glass is SF4 glass.
Claim 5
Dependent Claim
24 words
A wavelength modulator device as claimed in claim 1 wherein said single crystal is composed of 3,5-dimethyl-1-(4-nitrophenyl)pyrazol, and said cladding glass is SF4 glass.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-06-10 | 1994-12-10 | 1995-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-10 | 1998-12-10 | 1999-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-10 | 2002-12-10 | 2003-06-11 | $7700.00 | Window Closed / Lapsed |