Title:
OPTICAL BRANCHING CIRCUIT MANUFACTURING METHOD AND OPTICAL BRANCHING CIRCUIT MANUFACTURING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/064916
Kind Code:
A1
Abstract:
This optical branching circuit manufacturing method comprises: a step 1 for mounting an optical fiber core wire in a jig in which the optical fiber core wire is housed, and polishing the optical fiber core wire, together with the jig, up to the vicinity of a core of the optical fiber core wire or up to the core; a step 2 for applying a refractive index matching material having a lower refractive index than the refractive index of the core of the optical fiber core wire to a polished surface of the optical fiber core in the jig polished in the step 1 or a polished surface of an optical waveguide circuit previously polished up to the vicinity of a core or up to the core, and joining the polished surfaces; and a step 3 for aligning the polished surfaces joined in the step 2, and moving the jig or the optical waveguide circuit to a position at which a desired branching ratio is obtained.
Inventors:
UEMATSU TAKUI (JP)
HIROTA HIDENOBU (JP)
IIDA HIROYUKI (JP)
EBINE TAKASHI (JP)
HIROTA HIDENOBU (JP)
IIDA HIROYUKI (JP)
EBINE TAKASHI (JP)
Application Number:
PCT/JP2019/038989
Publication Date:
April 08, 2021
Filing Date:
October 02, 2019
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G02B6/28; G02B6/30
Foreign References:
| US20050018970A1 | 2005-01-27 | |||
| US6535685B1 | 2003-03-18 | |||
| JPS5990816A | 1984-05-25 | |||
| US4768850A | 1988-09-06 | |||
| US6968103B1 | 2005-11-22 | |||
| US6516131B1 | 2003-02-04 |
Attorney, Agent or Firm:
OKADA, Kenji et al. (JP)
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