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:
Sep. 17, 2019
Filed:
May. 13, 2014
Phovel. Co. Ltd., Daejeon, KR;
Jeong-Soo Kim, Gongju-si, KR;
PHOVEL. CO. LTD, Yuseong-Gu, Daejeon, KR;
Abstract
An optical receiver that can tune a selected wavelength using a wavelength tunable filter transmitting a plurality of wavelengths. The optical receiver is a wavelength tunable optical receiver that includes: a wavelength tunable filter () transmitting laser light from an optical fiber; and a photodiode () receiving laser light passing through the wavelength tunable filter (), in which the wavelength tunable filteris a Fabry-Perot type etalon filter transmitting a plurality of wavelengths. When a channel with a specific wavelength is moved to a channel with another wavelength, an optical channel is selected based on a peak different from a transmissive peak of an FP etalon filter selecting the previous channel so that temperature of the wavelength tunable filter can be changed. A light-receiving photodiode chip is disposed on a thermoelectric element and a wavelength tunable filter transmits different wavelengths in accordance with temperature of the thermoelectric element.