Patent US5982961A successfully refreshed from Google Patents.
US5982961A
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Organic crystal compound optical waveguide and methods for its fabrication
Assignee: Molecular Optoelectronics Corp
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Filing: 1997-09-16
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Granted: 1999-11-09
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Expires: 2017-09-16
Abstract
Abstract An optical coupling device, or a compound waveguide, in which optical energy is coupled to or from an optical signal propagating along a transmitting waveguide is disclosed. The optical coupling device includes a thin film organic crystal waveguide positioned in optical proximity to a portion of the transmitting waveguide. The organic crystal waveguide has a first, coupling surface facing the transmitting waveguide through which the optical energy is coupled. The transmitting waveguide may be a fiber optic having at least some material removed along a side thereof to facilitate the coupling of optical energy between the fiber optic and the organic crystal waveguide. Polishing and lapping methods for producing the thin film organic crystal waveguide, with optically smooth surfaces, are also disclosed, as are organic salt implementations of the organic crystal.
Inventors
- 👤 Feng Pan
- 👤 Kevin J. McCallion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:10
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/011; G02F1/0115; G02F1/0118; G02B; G02B6/00; G02B6/24; G02B6/26; G02B6/28; G02B6/2804; G02B6/2821; G02B6/2826; G02B6/2852; G02B6/293; G02B6/29331; G02B6/29332
Claims Analysis
Total Claims: 56
Claim 1
Independent Claim
76 words
An optical coupling device in which optical energy is coupled to or from an optical signal propagating along a transmitting waveguide, the optical coupling device comprising: a thin film, organic crystal waveguide positioned in optical proximity to an internal portion of the transmitting waveguide and having a first, coupling surface facing toward the portion of the transmitting waveguide through which the optical energy is coupled to intensity modulate the optical signal propagating along the transmitting waveguide.
Claim 2
Dependent Claim
76 words
An optical coupling device in which optical energy is coupled to or from an optical signal propagating along a transmitting waveguide, the optical coupling device comprising: a thin film, organic crystal waveguide positioned in optical proximity to an internal portion of the transmitting waveguide and having a first, coupling surface facing toward the portion of the transmitting waveguide through which the optical energy is coupled to intensity modulate the optical signal propagating along the transmitting waveguide.
Claim 3
Dependent Claim
41 words
The optical coupling device of claim 1, wherein the transmitting waveguide comprises a fiber optic having at least some material removed along a side thereof near said portion to facilitate the coupling of optical energy to or from the fiber optic.
Claim 4
Dependent Claim
30 words
The optical coupling device of claim 2, wherein a thickness of said organic crystal waveguide measured between the first and a second, opposing surface thereof is less than 40 μm.
Claim 5
Dependent Claim
30 words
The optical coupling device of claim 3, wherein the thickness of said organic crystal waveguide measured between the first and second surfaces thereof is between 20 μm and 30 μm.
Claim 6
Dependent Claim
40 words
The optical coupling device of claim 2, wherein the first, coupling surface and/or a second, opposing surface of said organic crystal waveguide are polished to an optical smoothness of less than a wavelength/4, wherein the wavelength is about 1,300 nm.
Claim 7
Dependent Claim
31 words
The optical coupling device of claim 5, wherein the first and/or second surfaces are polished to an optical smoothness of less than a wavelength/4, wherein the wavelength is about 580 nm.
Claim 8
Dependent Claim
18 words
The optical coupling device of claim 2, wherein said organic crystal waveguide is formed from an organic salt.
Claim 9
Dependent Claim
13 words
The optical coupling device of claim 7, wherein the organic salt comprises DAST.
Claim 10
Dependent Claim
24 words
The optical coupling device of claim 2, further comprising: at least one electrode disposed about said organic crystal waveguide to facilitate electro-optic operation thereof.
Claim 11
Dependent Claim
22 words
The optical coupling device of claim 1, wherein said organic crystal waveguide comprises one of a slab waveguide and a channel waveguide.
Claim 12
Dependent Claim
76 words
An optical coupling device in which optical energy is coupled to or from an optical signal propagating along a transmitting waveguide, the optical coupling device comprising: a polished, organic crystal waveguide positioned in optical proximity to an internal portion of the transmitting waveguide and having a first, coupling surface facing toward the portion of the fiber optic through which the optical energy is coupled to intensity modulate the optical signal propagating along the transmitting wave guide.
Claim 13
Dependent Claim
76 words
An optical coupling device in which optical energy is coupled to or from an optical signal propagating along a transmitting waveguide, the optical coupling device comprising: a polished, organic crystal waveguide positioned in optical proximity to an internal portion of the transmitting waveguide and having a first, coupling surface facing toward the portion of the fiber optic through which the optical energy is coupled to intensity modulate the optical signal propagating along the transmitting wave guide.
Claim 14
Dependent Claim
41 words
The optical coupling device of claim 11, wherein the transmitting waveguide comprises a fiber optic having at least some material removed along a side thereof near said portion to facilitate the coupling of optical energy to or from the fiber optic.
Claim 15
Dependent Claim
24 words
The optical coupling device of claim 11, wherein the first, coupling surface and/or a second, opposing surface of said organic crystal waveguide are polished.
Claim 16
Dependent Claim
37 words
The optical coupling device of claim 13, wherein the organic crystal waveguide comprises a thin film waveguide, and wherein a thickness of the waveguide measured between the first and second surfaces thereof is less than 40 μm.
Claim 17
Dependent Claim
28 words
The optical coupling device of claim 14, wherein the thickness of the waveguide measured between the first and second surfaces thereof is between 20 μm and 30 μm.
Claim 18
Dependent Claim
31 words
The optical coupling device of claim 15, wherein the first and/or second surfaces are polished to an optical smoothness of less than a wavelength/4, wherein the wavelength is about 1,300 nm.
Claim 19
Dependent Claim
31 words
The optical coupling device of claim 16, wherein the first and/or second surfaces are polished to an optical smoothness of less than a wavelength/4, wherein the wavelength is about 580 nm.
Claim 20
Dependent Claim
18 words
The optical coupling device of claim 11, wherein the organic crystal waveguide is formed from an organic salt.
Claim 21
Dependent Claim
13 words
The optical coupling device of claim 18, wherein the organic salt comprises DAST.
Claim 22
Dependent Claim
24 words
The optical coupling device of claim 11, further comprising: at least one electrode disposed about said organic crystal waveguide to facilitate electro-optic operation thereof.
Claim 23
Dependent Claim
22 words
The optical coupling device of claim 11, wherein the organic crystal waveguide comprises one of a slab waveguide and a channel waveguide.
Claim 24
Independent Claim
108 words
A method for producing an optical coupling, intensity modulating device, comprising: (a) providing a sample of an organic crystal; (b) providing a device block having an optical signal transmitting waveguide running therethrough; (c) polishing a first surface of the sample to a sufficient optical smoothness; (d) affixing the sample to the device block with the first surface facing a portion of the transmitting waveguide and therefore providing a coupling surface through which optical energy is coupled to or from the transmitting waveguide to intensity modulate the optical signal; and (e) thereafter polishing a second, opposing surface of the sample such that the sample attains a thin film thickness.
Claim 25
Independent Claim
108 words
A method for producing an optical coupling, intensity modulating device, comprising: (a) providing a sample of an organic crystal; (b) providing a device block having an optical signal transmitting waveguide running therethrough; (c) polishing a first surface of the sample to a sufficient optical smoothness; (d) affixing the sample to the device block with the first surface facing a portion of the transmitting waveguide and therefore providing a coupling surface through which optical energy is coupled to or from the transmitting waveguide to intensity modulate the optical signal; and (e) thereafter polishing a second, opposing surface of the sample such that the sample attains a thin film thickness.
Claim 26
Dependent Claim
30 words
The method of claim 22, further comprising: prior to said polishing (c), positioning at least one spacer around said sample to minimize lapping and/or polishing stress placed on said sample.
Claim 27
Dependent Claim
15 words
The method of claim 23, wherein the at least one spacer comprises organic crystal spacers.
Claim 28
Dependent Claim
25 words
The method of claim 22, further comprising, prior to said providing (a): growing an organic crystal; and cutting said sample from said grown organic crystal.
Claim 29
Dependent Claim
20 words
The method of claim 22, wherein said polishing step (c) is preceded by: lapping the first surface of the sample.
Claim 30
Dependent Claim
20 words
The method of claim 26, wherein said polishing step (e) is preceded by: lapping the second surface of the sample.
Claim 31
Dependent Claim
19 words
The method of claim 27, wherein the sample reaches about 50 μm thickness during said lapping said first surface.
Claim 32
Dependent Claim
30 words
The method of claim 28, wherein the sufficient optical smoothness of said polishing (c) comprises an optical smoothness of less than a wavelength/4, wherein the wavelength is about 580 nm.
Claim 33
Dependent Claim
15 words
The method of claim 29, wherein the thin film thickness is less than 40 μm.
Claim 34
Dependent Claim
12 words
The method of claim 30, wherein the sample comprises an organic salt.
Claim 35
Dependent Claim
11 words
The method of claim 31, wherein the organic salt comprises DAST.
Claim 36
Dependent Claim
12 words
The method of claim 22, wherein the sample comprises an organic salt.
Claim 37
Dependent Claim
11 words
The method of claim 33, wherein the organic salt comprises DAST.
Claim 38
Dependent Claim
15 words
The method of claim 22, wherein the thin film thickness is less than 35 μm.
Claim 39
Dependent Claim
20 words
The method of claim 22, further comprising: applying at least one electrode about the sample to facilitate electro-optic operation thereof.
Claim 40
Dependent Claim
12 words
The method of claim 22, wherein transmitting waveguide comprises a fiber optic.
Claim 41
Dependent Claim
37 words
The method of claim 37, further comprising: removing at least some material along a side of, and toward a core of, the fiber optic to facilitate coupling of the optical energy to or from the fiber optic.
Claim 42
Dependent Claim
14 words
An optical coupling, intensity modulating device produced according to the method of claim 38.
Claim 43
Dependent Claim
14 words
An optical coupling, intensity modulating device produced according to the method of claim 22.
Claim 44
Independent Claim
55 words
A method for producing an optical coupling, intensity modulating device, comprising: thinning an organic crystal waveguide to a thin film thickness; and placing the organic crystal waveguide in optical proximity to a portion of a transmitting waveguide to couple optical energy thereto or therefrom to intensity modulate an optical signal propagating in the transmitting waveguide.
Claim 45
Independent Claim
55 words
A method for producing an optical coupling, intensity modulating device, comprising: thinning an organic crystal waveguide to a thin film thickness; and placing the organic crystal waveguide in optical proximity to a portion of a transmitting waveguide to couple optical energy thereto or therefrom to intensity modulate an optical signal propagating in the transmitting waveguide.
Claim 46
Dependent Claim
13 words
The method of claim 41, wherein said thinning comprises: polishing said organic crystal.
Claim 47
Dependent Claim
15 words
The method of claim 42, wherein the thin film thickness is less than 40 μm.
Claim 48
Dependent Claim
40 words
The method of claim 43, wherein the transmitting waveguide is a fiber optic having at least some material removed therefrom along a side thereof near said portion to facilitate the coupling of optical energy to or from the fiber optic.
Claim 49
Dependent Claim
11 words
The method of claim 44, wherein the organic crystal comprises DAST.
Claim 50
Dependent Claim
14 words
An optical coupling, intensity modulating device formed according to the method of claim 45.
Claim 51
Dependent Claim
14 words
An optical coupling, intensity modulating device formed according to the method of claim 41.
Claim 52
Independent Claim
43 words
A method for coupling optical energy to or from a transmitting waveguide, comprising: using a thin film organic crystal waveguide placed in optical proximity to a portion of said transmitting waveguide to intensity modulate an optical signal propagating in the transmitting wave guide.
Claim 53
Independent Claim
43 words
A method for coupling optical energy to or from a transmitting waveguide, comprising: using a thin film organic crystal waveguide placed in optical proximity to a portion of said transmitting waveguide to intensity modulate an optical signal propagating in the transmitting wave guide.
Claim 54
Dependent Claim
41 words
The method of claim 48, wherein the transmitting waveguide comprises a fiber optic having material removed therefrom along its side and toward its core and near said portion to facilitate the coupling of optical energy to or from the fiber optic.
Claim 55
Dependent Claim
35 words
The method of claim 48, wherein the thin film organic crystal waveguide has a thickness between 20 μm and 30 μm, and has an optical smoothness of a wavelength/4 wherein the wavelength is 580 nm.
Claim 56
Dependent Claim
11 words
The method of claim 50, wherein the organic crystal comprises DAST.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2002-11-08 | 2003-05-10 | 2003-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-08 | 2007-05-10 | 2007-11-09 | $3760.00 | Window Closed / Lapsed |
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