EP0608566A2
Expired / Lapsed
EP
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Opitcal component mounting substrate and method of producing the same
Assignee: Panasonic Holdings Corp
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Filing: 1993-12-28
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Granted: —
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Expires: 2013-12-28
Abstract
Abstract An optical component mounting substrate which comprises grooves for holding optical fibers, other grooves for optical components being inserted and optical waveguides is produced with a press molding process. A mold having convex and/or concave surface profiles which are corresponding to the grooves and the optical waveguides to be formed on a surface of the optical component mounting substrate is used as a die in the press molding process. The surface profiles of the mold are precisely transferred onto the surface of a transparent glass base substrate, thereby forming the optical component mounting substrate having a desired surface configuration including the grooves and the optical waveguides. Optical fibers are aligned along the grooves and fixed by a light-curing adhesive. Since a press molding process is applied, the optical component mounting substrate can be produced easily at a low cost with mass production and also can attain many advantages such as small coupling loss, small crosstalk, high positional accuracy, excellent reproducibility and high reliability.
Inventors
- 👤 Miho Sugihara
- 👤 Masaki Aoki
- 👤 Makoto Umetani
- 👤 Yoshinari Kashiwagi
- 👤 Kenji Inoue
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 09:43
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/36; G02B6/38; G02B6/3807; G02B6/3833; G02B6/3865; B; B29; B29D; B29D11/00; B29D11/0074; B29D11/0075; C; C03; C03B; C03B11/00; C03B11/06; C03B11/08; C03B11/082; G02B6/10; G02B6/12; G02B6/13; G02B6/26; G02B6/30; G02B6/3628; G02B6/368; G02B6/3834; G02B6/3838; G02B6/3839; C03B2215/00; C03B2215/40; C03B2215/41; C03B2215/413; G02B2006/12035; G02B2006/12038; G02B6/3648; G02B6/3652; G02B6/3684; G02B6/3696
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
65 words
An optical component mounting substrate comprising: a glass base substrate; a first groove for holding an optical fiber, the first groove being formed on a surface of the glass base substrate by a press molding process; and a second groove in which an optical component being inserted, the second groove being formed on the surface of the glass base substrate by the press molding process.
Claim 2
Dependent Claim
19 words
An optical component mounting substrate according to claim 1, wherein the glass base substrate is made of BK-7 glass.
Claim 3
Dependent Claim
65 words
An optical component mounting substrate according to claim 1, further comprising: a high refractive glass plate having a larger refractive index than that of the glass base substrate, the high refractive glass plate being overlaid on a portion of the surface of the glass base substrate; and a waveguide being formed on a surface of the high refractive glass plate by a press molding process.
Claim 4
Dependent Claim
20 words
An optical component mounting substrate according to claim 3, wherein the high refractive glass plate is made of SF-1 glass.
Claim 5
Dependent Claim
21 words
An optical component mounting substrate according to claim 1, further comprising electrical conductors on the surface of the glass base substrate.
Claim 6
Dependent Claim
64 words
An optical component mounting apparatus comprising: a pair of glass substrates, on a surface of each of which a groove for holding an optical fiber is formed by a press molding process, the pair of glass substrates being aligned so that the groove on each surface are opposed to each other; and an optical fiber being fixed in the groove by a light-curing adhesive.
Claim 7
Dependent Claim
119 words
An optical component mounting apparatus comprising: a glass base substrate; a first groove for holding an optical fiber, the first groove being formed on a surface of the glass base substrate by a press molding process; a second groove in which an optical component being inserted, the second groove being formed on the surface of the glass base substrate by the press molding process; two or more optical waveguides formed on the surface of the glass base substrate by a press molding process; a thin film heating means for heating the optical waveguides; electrical conductors for conveying electric current to the thin film heating means; and an optical fiber being fixed in the first groove by a light-curing adhesive.
Claim 8
Dependent Claim
30 words
An optical component mounting substrate according to claim 7, further comprising a third groove for insulating heat conduction to the optical waveguides from other portions of the glass base substrate.
Claim 9
Independent Claim
65 words
A method of producing an optical component mounting substrate by a press molding process, comprising the steps of: providing a glass base substrate; providing a first mold to be used as a die in the press molding process; and conducting a press molding process with the first mold, thereby forming a groove for holding an optical fiber on the surface of the glass base substrate.
Claim 10
Dependent Claim
16 words
A method according to claim 9, wherein the glass base substrate is made of BK-7 glass.
Claim 11
Dependent Claim
84 words
A method according to claim 9, further comprising the steps of: providing a high refractive glass plate having a larger refractive index than that of the glass base substrate; overlaying the high refractive glass plate on a portion of the surface of the glass base substrate; providing a second mold to be used as a die in the press molding process; and conducting a press molding process with the second mold, thereby forming a waveguide on the surface of the high refractive glass plate.
Claim 12
Dependent Claim
15 words
A method according to claim 11, wherein the high refractive glass plate is SF-1 glass.
Claim 13
Dependent Claim
29 words
A method according to claim 9 or 11, further comprising the steps of: aligning an optical fiber in the groove; and fixing the optical fiber by a light-curing adhesive.
Claim 14
Dependent Claim
84 words
A method according to claim 9, further comprising the steps of: producing another optical component mounting substrate in the same manner; aligning the two optical component mounting substrates so that the groove on each surface are opposed to each other; aligning an optical fiber along the groove between the two optical component mounting substrates; filling a light-curing adhesive into the groove and other spaces between the two optical component mounting substrates; and fixing the light-curing adhesive by light illumination, thus fixing the optical fiber.
Claim 15
Dependent Claim
53 words
A method according to claim 9 or 11, wherein the first and the second molds being processed in the steps of: providing a base material made of hard metal; and grinding the base material so as to have a desired surface profile for being used as a die in the press molding process.
Claim 16
Dependent Claim
70 words
A method according to claim 9 or 11, wherein the first and the second molds being processed in the steps of: providing a base material made of hard metal; grinding a surface of the base material so as to have a desired surface profile for being used as a die in the press molding process; and depositing an iridium alloy layer on the surface being ground of the base metal.
Claim 17
Dependent Claim
79 words
A method according to claim 9 or 11, wherein the first and the second molds being processed in the steps of: providing a base material made of hard metal; and depositing a nickel alloy layer on a surface of the base metal; and cutting the surface of the base metal on which the nickel alloy layer is being deposited thereon so as to have a desired surface profile for being used as a die in the press molding process.
Claim 18
Dependent Claim
92 words
A method according to claim 9 or 11, wherein the first and the second molds being processed in the steps of: providing a base material made of hard metal; depositing a nickel alloy layer on a surface of the base metal; cutting the surface of the base metal on which the nickel alloy layer is being deposited thereon so as to have a desired surface profile for being used as a die in the press molding process; and depositing an iridium alloy layer on the surface being ground of the base metal.
References Cited (Backward Citations)
No citation records indexed.
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