US5168388A
Expired / Lapsed
US
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Optical waveguide device and optical second harmonic generator using the same
Assignee: Sony Corp
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Filing: 1991-04-17
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Granted: 1992-12-01
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Expires: 2011-04-17
Abstract
Abstract An optical waveguide device is disclosed which comprises a KTiOPO 4 single crystal substrate and an amorphous optical waveguide formed of Ta 2 O 5 or Ta 2 O 5 doped with TiO 2 . A second harmonic generator device in the form of the Cerenkov radiation using the optical waveguide has high SHG efficiency. Since the Cerenkov angle can be made small by optimizing the dimensions, the spread angle of the SHG light can be made small.
Inventors
- 👤 Hitoshi Tamada
- 👤 Masaki Saitoh
- 👤 Chiharu Isobe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:21
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/10; G02B6/12; G02B6/122; G02F; G02F1/00; G02F1/35; G02F1/37; G02F1/377; G02F1/374
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
39 words
An optical waveguide device, comprising: a KTiOPO 4 single crystal substrate, and an amorphous optical waveguide formed of Ta 2 O 5 or Ta 2 O 5 doped with TiO 2 directly on an upper surface of the substrate.
Claim 2
Dependent Claim
39 words
An optical waveguide device, comprising: a KTiOPO 4 single crystal substrate, and an amorphous optical waveguide formed of Ta 2 O 5 or Ta 2 O 5 doped with TiO 2 directly on an upper surface of the substrate.
Claim 3
Dependent Claim
18 words
An optical waveguide device according to claim 1 wherein said amorphous optical waveguide is a channel optical waveguide.
Claim 4
Dependent Claim
22 words
An optical waveguide device according to claim 1 further comprising a cladding layer formed over said substrate and said amorphous optical waveguide.
Claim 5
Dependent Claim
19 words
An optical waveguide device according to claim 1 wherein said optical waveguide is formed of only a single layer.
Claim 6
Dependent Claim
74 words
A second harmonic generator, comprising: a KTiOPO 4 single crystal substrate, and an amorphous optical waveguide formed of Ta 2 O 5 or Ta 2 O 5 doped with TiO 2 directly on an upper surface of the substrate, one end of said amorphous optical waveguide being supplied with an input light having an angular frequency of ω, and generating a second harmonic light having an angular frequency of 2ωwith a Cerenkov angle θ.
Claim 7
Dependent Claim
74 words
A second harmonic generator, comprising: a KTiOPO 4 single crystal substrate, and an amorphous optical waveguide formed of Ta 2 O 5 or Ta 2 O 5 doped with TiO 2 directly on an upper surface of the substrate, one end of said amorphous optical waveguide being supplied with an input light having an angular frequency of ω, and generating a second harmonic light having an angular frequency of 2ωwith a Cerenkov angle θ.
Claim 8
Dependent Claim
19 words
A second harmonic generator according to claim 5 wherein said Cerenkov angle θ is not larger than 1 degree.
Claim 9
Dependent Claim
38 words
A second harmonic generator according to claim 5 wherein said Cerenkov angle θ is not larger than 1degree, and a spread angle of said second harmonic light in a transverse direction is substantially equal to said Cerenkov angle.
Claim 10
Dependent Claim
18 words
A second harmonic generator according to claim 5 wherein said amorphous optical waveguide is a channel optical waveguide.
Claim 11
Dependent Claim
22 words
A second harmonic generator according to claim 5 wherein a cladding layer is formed over said substrate and said amorphous optical waveguide.
Claim 12
Dependent Claim
20 words
A second harmonic generator according to claim 5 wherein said amorphous optical waveguide is formed of only a single layer.
Claim 13
Dependent Claim
33 words
An optical waveguide device, comprising: a KTiOPO 4 single crystal substrate, and an amorphous optical waveguide formed of Ta 2 O 5 or of Ta 2 O 5 doped with TiO 2 .
Claim 14
Dependent Claim
33 words
An optical waveguide device, comprising: a KTiOPO 4 single crystal substrate, and an amorphous optical waveguide formed of Ta 2 O 5 or of Ta 2 O 5 doped with TiO 2 .
Claim 15
Dependent Claim
68 words
A second harmonic generator, comprising: a KTiOPO 4 single crystal subtrae, and an amorphous optical waveguide formed of Ta 2 O 5 or Ta 2 O 5 doped with TiO 2 , one end of said amorphous optical waveguide being supplied with an input light having an angular frequency of ω, and generating a second harmonic light having an angular frequency of 2ω with a Cerenkov angle θ.
Claim 16
Dependent Claim
68 words
A second harmonic generator, comprising: a KTiOPO 4 single crystal subtrae, and an amorphous optical waveguide formed of Ta 2 O 5 or Ta 2 O 5 doped with TiO 2 , one end of said amorphous optical waveguide being supplied with an input light having an angular frequency of ω, and generating a second harmonic light having an angular frequency of 2ω with a Cerenkov angle θ.
References Cited (Backward Citations)
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