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:
Mar. 14, 2006
Filed:
Jan. 19, 2005
Enboa Wu, Taipei, TW;
Rou-ching Yang, Taipei, TW;
Kuo-ching San, Yongkang, TW;
National Taiwan University, , TW;
Abstract
The invention discloses a tunable long period fiber grating structure and fabrication method, which produces an expected microbending deformation by adjusting the temperature and making use of the unmatched coefficients of thermal expansion between different materials, and thus creating a phenomenon of mode coupling effect occurred in traditional optical gratings in order to provide the structure and fabrication method for having an effect of tuning spectra by controlling the temperature. This invention not only can be applied to the optical communications and wavelength dependent multiplexed devices and equipments, but also can be applied to the temperature and deformation detection. The tunable long period fiber grating structure in accordance to the present invention comprises a substrate; a periodic structure being disposed thereon and having a first coefficient of thermal expansion; a coupling agent, having a second coefficient of thermal expansion for fixing a fiber to the periodic structure; wherein the first and second coefficients of thermal expansion are different.