Chem Optics Inc.

Solidsystems Inc.

Woo Jin Lee

Jun Kyu Seo

Kyoung Min Kim

Young Ouk Noh

Yoon Koo Kwon

Hak Kyu Lee

The present invention relates to a wavelength locking structure for a tunable laser and a wavelength locking method for a tunable laser. According to the present invention, since it is possible to use only one element for measuring the intensity of light, the number of parts is reduced in comparison to methods of the related art, so it is possible to perform wavelength locking economically with a down-sized structure.

Wavelength locking structure and method for tunable laser

Provided are a tunable wavelength filter with an embedded metal temperature sensor and an external-cavity type tunable wavelength laser module. In detail, the tunable wavelength filter with an embedded metal temperature sensor and the external-cavity type tunable wavelength laser module achieve wavelength stability by forming a metal temperature sensor using a resistance change of a metal thin film according to temperature on a point on an isothermal layer having the same temperature distribution as the optical waveguide during a process for fabricating the optical waveguide with polymer to accurately measure a temperature of an optical waveguide.

Tunable wavelength filter with embedded metal temperature sensor and its application to external-cavity type tunable wavelength laser

Growing community of inventors

Yongin-si, South Korea

Woo Jin Lee