Title:
WAVEGUIDE-TYPE OPTICAL SWITCH CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2024/079860
Kind Code:
A1
Abstract:
The present invention realizes: having a single thin-film heater mounted on an optical switch element; and a protection function. This waveguide-type optical switch circuit comprises a plurality of Mach–Zehnder interferometer-type two-input two-output optical switch elements, and forms an N-input one-output optical switch or a one-input N-output optical switch. Each of the optical switch elements includes a heater in one of two arm waveguides. For switching in which a reduction in time is required when paths are changed, an optical switch element for applying a voltage of zero to the heater during the change is not included in the path after the change.
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Inventors:
MORIWAKI OSAMU (JP)
SUZUKI KENYA (JP)
SUZUKI KENYA (JP)
Application Number:
PCT/JP2022/038277
Publication Date:
April 18, 2024
Filing Date:
October 13, 2022
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G02F1/313
Domestic Patent References:
| WO2021149243A1 | 2021-07-29 |
Foreign References:
| JP2000068932A | 2000-03-03 | |||
| JP2001264558A | 2001-09-26 | |||
| US6773615B1 | 2004-08-10 | |||
| JPS6477002A | 1989-03-23 | |||
| JP2002062549A | 2002-02-28 | |||
| JPH1130769A | 1999-02-02 |
Attorney, Agent or Firm:
TANI & ABE, P.C. (JP)
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