POLARIZATION DIRECTION DISCRIMINATOR, DUAL OUTPUT LASER, AND POLARIZATION DIRECTION DISCRIMINATION METHOD

WIPO Patent Application WO/2023/204305

A1

The purpose of the present invention is to provide a polarization direction discriminator that exhibits asymmetric transparency in accordance with the polarization direction of propagated light. This polarization direction discriminator 10 comprises: a first Faraday rotator 11 that is between a first port PO1 provided to one end of the discriminator and a second port PO2 provided to the other end, and is disposed on the first port PO1 side; a second Faraday rotator 12 that is between the first port PO1 and the second port PO2, and is disposed on the second port PO2 side; and a polarization selection device 15 that includes a polarizing plate 14 as an optical element disposed between the first Faraday rotator 11 and the second Faraday rotator 12, and that limits the passage of one among first intermediate polarized light P12, P23 and second intermediate polarized light P22, P13 incident on the polarizing plate 14.

SET SZE YUN (JP)
UYAMA KOTA (JP)
YAMASHITA SHINJI (JP)

PCT/JP2023/015918

October 26, 2023

April 21, 2023

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UNIV TOKYO (JP)

G02B27/28; G02B5/30; H01S3/067

US20200403372A1	2020-12-24
JP2015155822A	2015-08-27
JP2018205586A	2018-12-27
JPH0792325A	1995-04-07

UYAMA, KOTA; SHIRAHATA, TAKUMA; SET, SZE YUN; YAMASHITA, SHINJI: "24a-D315-3 Bi-directional Polarization-Maintaining Mode-Locked Fiber Laser", PROCEEDINGS OF THE 69TH JAPAN SOCIETY OF APPLIED PHYSICS (JSAP) SPRING MEETING 2022; MARCH 22-26, 2022, JAPAN SOCIETY OF APPLIED PHYSICS (JSAP), vol. 69, 22 March 2022 (2022-03-22) - 26 March 2022 (2022-03-26), pages 03 - 193, XP009549748

KARINO Yoshimasa et al. (JP)

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