Title:
OPTICAL MODULATOR AND OPTICAL TRANSMISSION DEVICE USING SAME
Document Type and Number:
WIPO Patent Application WO/2024/069953
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide an optical modulator that suppresses the progression of over-etching and prevents electrode peeling and increases in drive voltage. This optical modulator comprises: a substrate 1 having an optical waveguide 10 formed thereon; and an electrode 2 arranged near the optical waveguide on the substrate. The optical modulator has an electrode underlayer 3 between the substrate 1 and the electrode 2 and is characterized in that uneven sections 5 are formed on the surface side of the substrate 1 in a predetermined range S2 extending from an end section of the electrode 2 near the optical waveguide to the inside of the electrode when the substrate is viewed in a planar view.
Inventors:
MURATA YUMI (JP)
OKAHASHI KOSUKE (JP)
HIRATA SHOTARO (JP)
OKAHASHI KOSUKE (JP)
HIRATA SHOTARO (JP)
Application Number:
PCT/JP2022/036753
Publication Date:
April 04, 2024
Filing Date:
September 30, 2022
Export Citation:
Assignee:
SUMITOMO OSAKA CEMENT CO LTD (JP)
International Classes:
G02F1/035
Foreign References:
| JP2004157500A | 2004-06-03 | |||
| JP2005221874A | 2005-08-18 | |||
| JP2006084537A | 2006-03-30 | |||
| JP2021162681A | 2021-10-11 | |||
| US20020141679A1 | 2002-10-03 |
Attorney, Agent or Firm:
TAMURA Chikashi et al. (JP)
Download PDF: