Ferrule for optical wave guide
AssigneeInternational Business Machines Corporation
InventorsFumiaki Yamada, Masaki Hasegawa, Yoichi Taira
Life of this patent
Estimating the term…
Abstract
An apparatus includes an optical wave guide and a ferrule. The optical wave guide has a prespecified horizontal-positioning surface and a prespecified vertical-positioning surface. The ferrule is to precisely couple with the optical wave guide. The ferrule defines a first datum plane mating with the prespecified vertical-positioning surface of the optical wave guide to precisely mechanically vertically position the optical wave guide within the ferrule. The ferrule defines a second datum plane mating with the prespecified horizontal-positioning surface of the optical wave guide to precisely mechanically horizontally position the optical wave guide within the ferrule.
Claims6
A method comprising:
- fabricating a center notch within a substrate of an optical wave guide;
- fabricating a bottom cladding layer onto the substrate with the center notch positioned downward;
- fabricating on the bottom cladding layer a core pattern capable of transmitting light therethrough;
- and,
- fabricating an upper cladding layer onto the core pattern of the bottom cladding layer,
- wherein fabricating the bottom cladding layer onto the substrate comprises:
- spincoating a material onto the substrate and of which the bottom cladding layer is made, using a spincoating tool;
- and,
- baking the substrate onto which the material has been spincoated on a hot plate.
A method comprising:
- fabricating a center notch within a substrate of an optical wave guide;
- fabricating a bottom cladding layer onto the substrate with the center notch positioned downward;
- fabricating on the bottom cladding layer a core pattern capable of transmitting light therethrough;
- and,
- fabricating an upper cladding layer onto the core pattern of the bottom cladding layer,
- wherein fabricating the bottom cladding layer onto the substrate comprises:
- spincoating a first material onto the substrate and of which the bottom cladding layer is made, using a spincoating tool;
- and,
- baking the substrate onto which the first material has been spincoated on a hot plate,
- wherein fabricating on the bottom cladding layer the core pattern capable of transmitting light therethrough comprises:
- spincoating a second material onto the bottom cladding layer and of which the core pattern is made, using a spincoating tool;
- baking the substrate onto which the first material and the second material have been spincoated is made on a hot plate;
- aligning the notch with a mask for the core pattern to precisely position the mask for the core pattern relative to the notch;
- and,
- photolithographically fabricating the core pattern within the second material spincoated on the bottom cladding layer using the mask as has been precisely positioned.
A method comprising:
- fabricating a center notch within a substrate of an optical wave guide;
- fabricating a bottom cladding layer onto the substrate with the center notch positioned downward;
- fabricating on the bottom cladding layer a core pattern capable of transmitting light therethrough;
- and,
- fabricating an upper cladding layer onto the core pattern of the bottom cladding layer,
- wherein fabricating the bottom cladding layer onto the core pattern comprises:
- spincoating a material onto the core pattern and of which the bottom cladding layer is made, using a spincoating tool;
- and,
- baking the substrate onto which the material has been spincoated on a hot plate.
Dependencies are inferred from the claim text.