Title:
OPTICAL PHASED ARRAY AND LIDAR SENSOR USING SAME
Document Type and Number:
WIPO Patent Application WO/2019/207638
Kind Code:
A1
Abstract:
The present invention provides an optical phased array (OPA) capable of performing a function for beam steering or beam scanning based on a relatively small phase shift without the need for a complex calibration process for determining a phase-shift compensation amount. The optical phased array comprises: a bus waveguide that is constituted by an optical waveguide formed on a substrate and allows input light to propagate therethrough; a plurality of photocouplers provided on the bus waveguide, each of the photocouplers extracting a portion of the light propagating through the bus waveguide; a plurality of waveguide lines each propagating the light extracted by the plurality of photocouplers; and a phase shifter provided on the bus waveguide. The plurality of waveguide lines has mutually equal optical path lengths. A phase shifter is provided on each section of the bus waveguide between adjacent photocouplers.
Inventors:
JIN CHENGJUN (JP)
Application Number:
PCT/JP2018/016558
Publication Date:
October 31, 2019
Filing Date:
April 24, 2018
Export Citation:
Assignee:
TAISEI TECH CO LTD (JP)
International Classes:
G02F1/01; G02B6/124; G02B6/125
Foreign References:
| JP2017187649A | 2017-10-12 | |||
| JP2017161591A | 2017-09-14 | |||
| US6219471B1 | 2001-04-17 | |||
| JP2018010118A | 2018-01-18 | |||
| US20120045163A1 | 2012-02-23 |
Other References:
YAACOBI ET AL.: "Integrated phased array for wide- angle beam steering", OPTICS LETTERS, vol. 39, no. 15, 1 August 2014 (2014-08-01), pages 4575 - 4578, XP055497363, DOI: 10.1364/OL.39.004575
Attorney, Agent or Firm:
KUSHIBUCHI & ASSOCIATES (JP)
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