OPTICAL MODULE

WIPO Patent Application WO/2021/002402

A1

This optical module is provided with: a first optical branching element which branches signal light including a first polarization component and a second polarization component that have polarization directions orthogonal to each other into the first polarization component and the second polarization component; a first element which has a first inlet and to which the first polarization component is inputted from the first inlet; a second element which has a second inlet and to which the second polarization component is inputted from the second inlet; a first condensing part which is disposed between the first optical branching element and the first inlet, and condenses the first polarization component toward the first inlet; and a second condensing part which is disposed between the first optical branching element and the second inlet, and condenses the second polarization component toward the second inlet. The optical path length of the first polarization component from the first optical branching element to the first condensing part is larger than the optical path length of the second polarization component from the first optical branching element to the second condensing part, and the average refractive index in the optical axis direction of the second condensing part is larger than the average refractive index in the optical axis direction of the first condensing part.

KANEMARU SATORU (JP)

PCT/JP2020/025890

January 07, 2021

July 01, 2020

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SEDI INC (JP)

G02B13/14; G02B6/42; G02F2/00

WO2016143725A1

2016-09-15

JP2017107131A	2017-06-15
JPH0682723A	1994-03-25
JP2018533033A	2018-11-08
JP2001036505A	2001-02-09
US20030095311A1	2003-05-22

HASEGAWA Yoshiki et al. (JP)

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