Optical fiber mounting waveguide device and method for fabricating same
First Claim
1. An optical fiber mounting waveguide device, comprising:
- a substrate;
an optical fiber mounting groove provided on a part of the substrate for mounting an optical fiber;
an under cladding layer and a core sequentially formed on the substrate; and
an over cladding layer formed on the core, the over cladding layer having an end surface facing to the optical fiber mounting groove,wherein the core and the under cladding layer are protruded toward the optical fiber mounting groove with respect to the end surface of the over cladding layer, andwherein an end surface of the core protrudes with respect to the end surface of the over cladding layer, and the end surface of the core and the end surface of the over cladding layer are provided on different planes.
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Accused Products
Abstract
An optical fiber mounting waveguide device and a method for fabricating the same, which provide a low optical connection loss and a high productivity. An under cladding layer (3u), a core (4), and an over cladding layer (3o) are sequentially formed on a substrate (8) to constitute an optical fiber mounting waveguide device (1). An optical fiber mounting groove (2) for mounting an optical fiber (6) is formed on the optical fiber mounting waveguide device (1). An end surface (3a) of the over cladding layer (3o) faces to the optical fiber mounting groove (2). The core (4) and the under cladding layer (3u) are projected toward the optical fiber mounting groove (2) with respect to the end surface (3a) of the over cladding layer (3o).
10 Citations
19 Claims
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1. An optical fiber mounting waveguide device, comprising:
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a substrate; an optical fiber mounting groove provided on a part of the substrate for mounting an optical fiber; an under cladding layer and a core sequentially formed on the substrate; and an over cladding layer formed on the core, the over cladding layer having an end surface facing to the optical fiber mounting groove, wherein the core and the under cladding layer are protruded toward the optical fiber mounting groove with respect to the end surface of the over cladding layer, and wherein an end surface of the core protrudes with respect to the end surface of the over cladding layer, and the end surface of the core and the end surface of the over cladding layer are provided on different planes. - View Dependent Claims (2, 3, 11, 12, 13, 14, 15, 16, 17)
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4. An optical fiber mounting waveguide device, comprising:
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a substrate; an optical fiber mounting groove provided on a part of the substrate for mounting an optical fiber; an under cladding layer and a core sequentially formed on the substrate; and an over cladding layer formed on the core, the over cladding layer having an end surface facing to the optical fiber mounting groove, wherein the core and the under cladding layer are protruded toward the optical fiber mounting groove with respect to the end surface of the over cladding layer, wherein the optical fiber is mounted in the optical fiber mounting groove, an end surface of the optical fiber contacting with the core, wherein the core and the optical fiber are connected by curing an adhesive filled between the end surface of the optical fiber and end surfaces of the over cladding layer, the core, and the under cladding layer, and wherein a difference between refractive indices of the core and the adhesive after curing is within ±
0.005. - View Dependent Claims (5)
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6. A method for fabricating an optical fiber mounting waveguide device, said method comprising:
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forming an optical fiber mounting groove on the optical fiber mounting waveguide device for mounting an optical fiber; forming an under cladding layer and a core sequentially on a substrate at a position facing to the optical fiber mounting groove; coating a cladding material on the under cladding layer and the core; providing a mask pattern for covering a part of the over cladding layer at the position facing to the optical fiber mounting groove; and exposing the cladding material to provide an over cladding layer, wherein the core and the under cladding layer are protruded toward the optical fiber mounting groove with respect to an end surface of the over cladding layer. - View Dependent Claims (7, 8, 9, 10, 18, 19)
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Specification