The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 14, 2017
Filed:
Oct. 24, 2014
Chemoptics Inc., Daejeon, KR;
Solidsystems Inc., Yongin-si, Gyeonggi-do, KR;
Hak Kyu Lee, Seoul, KR;
Jun Kyu Seo, Daejeon, KR;
Woo Jin Lee, Yongin-si, KR;
Kyoung Min Kim, Seoul, KR;
ChemOptics Inc., Daejeon, KR;
Solidsystems Inc., Yongin-si, KR;
Abstract
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.