Title:
OPTICAL FILTER
Document Type and Number:
WIPO Patent Application WO/2023/228349
Kind Code:
A1
Abstract:
The purpose of the present disclosure is to enable elimination of an unnecessary light component in an optical fiber by a small-size structure. The present disclosure relates to an optical filter characterized by having an optical waveguide part (13T) in a cladding (12) of an optical fiber with one or more cores (11) disposed in the cladding (12). The optical waveguide part (13T) is adjacent to part of the core (11), and coupled to a specific component included in propagation light in the core (11).
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Inventors:
YAMASHITA YOKO (JP)
MORI TAKAYOSHI (JP)
SAKAMOTO TAIJI (JP)
IIDA HIROYUKI (JP)
MATSUI TAKASHI (JP)
SAGAE YUTO (JP)
IMADA RYOTA (JP)
OMOTO KOHEI (JP)
IWAYA TARO (JP)
AOZASA SHINICHI (JP)
NAKAJIMA KAZUHIDE (JP)
MORI TAKAYOSHI (JP)
SAKAMOTO TAIJI (JP)
IIDA HIROYUKI (JP)
MATSUI TAKASHI (JP)
SAGAE YUTO (JP)
IMADA RYOTA (JP)
OMOTO KOHEI (JP)
IWAYA TARO (JP)
AOZASA SHINICHI (JP)
NAKAJIMA KAZUHIDE (JP)
Application Number:
PCT/JP2022/021530
Publication Date:
November 30, 2023
Filing Date:
May 26, 2022
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G02B6/02
Domestic Patent References:
| WO2022059203A1 | 2022-03-24 | |||
| WO2022059205A1 | 2022-03-24 | |||
| WO2021214976A1 | 2021-10-28 |
Foreign References:
| JP2005538392A | 2005-12-15 | |||
| US20080069497A1 | 2008-03-20 |
Attorney, Agent or Firm:
OKADA, Kenji et al. (JP)
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