Invention Grant
- Patent Title: Reflective diffraction grating and fabrication method
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Application No.: US14229399Application Date: 2014-03-28
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Publication No.: US09720147B2Publication Date: 2017-08-01
- Inventor: John Michael Miller , Hery Djie , Patrick Lu , Xiaowei Guo , Qinghong Du , Eddie Chiu , Chester Murley
- Applicant: Lumentum Operations LLC
- Applicant Address: US CA Milpitas
- Assignee: Lumentum Operations LLC
- Current Assignee: Lumentum Operations LLC
- Current Assignee Address: US CA Milpitas
- Agency: Harrity & Harrity, LLP
- Main IPC: G02B5/18
- IPC: G02B5/18 ; G02B1/10 ; B29D11/00 ; G03F7/00

Abstract:
A reflective diffraction grating and a fabrication method are provided. The reflective diffraction grating includes a substrate, a UV-absorbing layer, a grating layer having a binary surface-relief pattern formed therein, and a conforming reflective layer. Advantageously, the UV-absorbing layer absorbs light at a UV recording wavelength to minimize reflection thereof by the substrate during holographic patterning at the UV recording wavelength.
Public/Granted literature
- US20150276998A1 REFLECTIVE DIFFRACTION GRATING AND FABRICATION METHOD Public/Granted day:2015-10-01
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