Invention Grant
- Patent Title: Uniform laser direct writing for waveguides
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Application No.: US15840152Application Date: 2017-12-13
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Publication No.: US10261257B2Publication Date: 2019-04-16
- Inventor: Richard C. A. Pitwon
- Applicant: Seagate Technology LLC
- Applicant Address: US CA Cupertino
- Assignee: Seagate Technology LLC
- Current Assignee: Seagate Technology LLC
- Current Assignee Address: US CA Cupertino
- Agency: Mueting, Raasch & Gebhardt, P.A.
- Main IPC: G02B6/126
- IPC: G02B6/126 ; G02B6/138 ; G02B6/122 ; G02B6/125

Abstract:
A waveguide includes a segment with a substantially uniform cure profile and related methods and systems for making and using the same. The waveguide is formed by modifying a laser beam used to write the waveguide to provide a substantially uniform cure profile in the waveguide. A marker characteristic of laser writing may be present in the waveguide. A method or system modifies an intensity profile or a shape profile of a laser beam to proactively compensate for exposure convolution based on the characteristics of the laser beam spot profile. A convolution compensator is positioned in the path of the laser beam to modify the beam spot profile during writing to form the one or more segments of the waveguide in a photo-curable layer.
Public/Granted literature
- US20180100968A1 UNIFORM LASER DIRECT WRITING FOR WAVEGUIDES Public/Granted day:2018-04-12
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