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.
Type:
Grant
Filed:
October 24, 2014
Date of Patent:
November 14, 2017
Assignees:
ChemOptics Inc., Solidsystems Inc.
Inventors:
Hak Kyu Lee, Jun Kyu Seo, Woo Jin Lee, Kyoung Min Kim
Abstract: The present invention relates to a passive wavelength division multiplexing device for automatic wavelength locking and a system thereof including an optical multiplexer, an optical filter, an integrated optical receiver monitor, and a tunable optical transmitter. Through wavelength locking that adjusts a wavelength of an optical signal, which changes according to an external environment such as a temperature change, into a wavelength of an optical signal having the maximum optical intensity, communication quality may be maximized by securing a stable communication channel, a locking time and a communication channel setting time may be reduced, and more robust locking may be guaranteed.
Type:
Grant
Filed:
November 30, 2010
Date of Patent:
August 11, 2015
Assignees:
SOLID, INC., SOLID SYSTEMS, INC., CHEMOPTICS, INC.
Abstract: The present invention relates to a passive wavelength division multiplexing device for automatic wavelength locking and a system thereof including an optical multiplexer, an optical filter, an integrated optical receiver monitor, and a tunable optical transmitter. Through wavelength locking that adjusts a wavelength of an optical signal, which changes according to an external environment such as a temperature change, into a wavelength of an optical signal having the maximum optical intensity, communication quality may be maximized by securing a stable communication channel, a locking time and a communication channel setting time may be reduced, and more robust locking may be guaranteed.
Type:
Application
Filed:
November 30, 2010
Publication date:
November 28, 2013
Applicants:
SOLID, INC., CHEMOPTICS INC., SOLID SYSTEMS, INC.
Abstract: Disclosed is a fluorine compound having perfluorostyrene introduced at a terminal thereof, as represented in the following Formula 1, and a coating solution and an optical waveguide device using the same, characterized in that the introduction of perfluorostyrene results in a facile fabrication of thin films by a UV curing or a thermal curing, high thermal stability and chemical resistance, and low optical propagation loss and birefringence: Wherein Z is O or S; RF is an aliphatic or aromatic group; y is a natural number of 1-10; y? is an integer of 0-1, x is an integer of 0-200; and Wherein B is a single bond or selected from the group consisting of —CO—, —SO2—, —S— and —O—, and Hal is selected from the group consisting of F, Cl, Br and I.
Type:
Application
Filed:
March 19, 2007
Publication date:
July 26, 2007
Applicant:
Chemoptics Inc.
Inventors:
Ji-Hyang Kim, Jae-Il Kim, Tae-Kyun Kim, Hyung Lee, Seon Han
Abstract: Disclosed is a fluorine compound having perfluorostyrene introduced at a terminal thereof, as represented in the following Formula 1, and a coating solution and an optical waveguide device using the same, characterized in that the introduction of perfluorostyrene results in a facile fabrication of thin films by a UV curing or a thermal curing, high thermal stability and chemical resistance, and low optical propagation loss and birefringence: Wherein Z is O or S; RF is an aliphatic or aromatic group; y is a natural number of 1–10; y? is an integer of 0–1; x is an integer of 0–200; and Wherein B is a single bond or selected from the group consisting of —CO—, —SO2—, —S— and —O—, and Hal is selected from the group consisting of F, Cl, Br and I.
Type:
Grant
Filed:
January 13, 2005
Date of Patent:
April 10, 2007
Assignee:
Chemoptics Inc.
Inventors:
Ji-Hyang Kim, Jae-II Kim, Tae-Kyun Kim, Hyung Jong Lee, Seon Gyu Han