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:
Aug. 20, 2019
Filed:
Mar. 31, 2017
Jia Jiang, Kanata, CA;
Jia Jiang, Kanata, CA;
HUAWEI TECHNOLOGIES CO., LTD., Shenzhen, CN;
Abstract
A phase shifting optical device and method of manufacture is provided. In an embodiment, the phase shifting optical device may include a first arm defining a first arm optical path, a second arm defining a second arm optical path, a beam splitter for splitting an input optical beam into first and second sub-beams for propagating in the first and second arm optical paths, respectively, and a beam combiner for combining the first and second sub-beams propagated in the first and second arm optical paths, respectively, into an output optical beam. The first arm including a carrier modification element to induce a phase shift in the first arm optical path relative to the second arm optical path. A cladding may be provided proximate to the first arm, the cladding having a temperature coefficient of refractive index (dn/dT)cl opposite in sign to a temperature coefficient of refractive index (dn/dT)a of the first arm.