Title:
OPTICAL TRANSMITTER
Document Type and Number:
WIPO Patent Application WO/2024/024086
Kind Code:
A1
Abstract:
This optical transmitter comprises a waveguide type laser (102) formed on a substrate (101), a waveguide type EA modulator (103), and a waveguide type semiconductor optical amplifier (104) and comprises a condensing unit (106) that uses multi-mode interference to condense reflected light that has been output by the semiconductor optical amplifier (104), has been made incident obliquely to an exit end (105), and has been reflected by the exit end (105) toward the substrate (101) side. The condensing unit (106) is formed from an optical waveguide made of a flat core having the core width larger than the core thickness when viewed in cross section.
Inventors:
CHIN MEISHIN (JP)
SHINDO TAKAHIKO (JP)
KANAZAWA SHIGERU (JP)
SHINDO TAKAHIKO (JP)
KANAZAWA SHIGERU (JP)
Application Number:
PCT/JP2022/029294
Publication Date:
February 01, 2024
Filing Date:
July 29, 2022
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H04B10/50; H01S5/026; H01S5/0683; H01S5/12
Domestic Patent References:
| WO2017135381A1 | 2017-08-10 | |||
| WO2019059066A1 | 2019-03-28 | |||
| WO2021097560A1 | 2021-05-27 |
Attorney, Agent or Firm:
YAMAKAWA, Shigeki et al. (JP)
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