WAVELENGTH LOCKING STRUCTURE OF TUNABLE LASER AND WAVELENGTH LOCKING METHOD OF TUNABLE LASER

Title:

WAVELENGTH LOCKING STRUCTURE OF TUNABLE LASER AND WAVELENGTH LOCKING METHOD OF TUNABLE LASER

Document Type and Number:

WIPO Patent Application WO/2018/079914

Kind Code:

A1

Abstract:

The present invention relates to a wavelength locking structure of a tunable laser, which is more compact and economical compared to a conventional method, and a wavelength locking method of a tunable laser. The wavelength locking structure of a tunable laser according to the present invention comprises: a tunable laser (100); a beam splitter (200) for receiving light incident from the tunable laser (100) and splitting the light into transmitted light (A) and reflected light (B); an etalon filter (300) for transmitting the reflected light (B) in a predetermined wavelength band; a light receiving element (400) for converting the light transmitted through the etalon filter (300) into an electrical signal; and a control unit (500) for periodically changing a wavelength of light emitted from the tunable laser (100) using the electrical signal converted from the light receiving element (400) so as to include the wavelength at which a light amount of the light transmitted through the etalon filter (300) is the maximum value.

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Inventors:

NOH YOUNG OUK (KR)
LEE WOO JIN (KR)
KWON YOON KOO (KR)
SEO JUN KYU (KR)

Application Number:

PCT/KR2016/013519

Publication Date:

May 03, 2018

Filing Date:

November 23, 2016

Export Citation:

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Assignee:

CHEM OPTICS INC (KR)

International Classes:

H01S3/11; G02B27/14; H01S3/08

Foreign References:

JP2004146523A	2004-05-20
JP2005340359A	2005-12-08
US5198872A	1993-03-30
JP2004047729A	2004-02-12
JP2011054714A	2011-03-17
KR20040000188A	2004-01-03

Other References: