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:
Jun. 28, 2016
Filed:
Jul. 23, 2014
Wuhan Research Institute of Posts and Telecommunications, Wuhan, CN;
Quan You, Wuhan, CN;
Dequan Xie, Wuhan, CN;
Zichen Liu, Wuhan, CN;
Ying Qiu, Wuhan, CN;
Miaofeng Li, Wuhan, CN;
Qi Yang, Wuhan, CN;
Abstract
A wavelength selective switch and a wavelength selection method are provided. The wavelength selective switch comprises an input port, through which a light beam, including a plurality of optical signals having different wavelengths, is incident; a wavelength separation apparatus, including a Blue Phase Liquid Crystal (BPLC) device and configured to separate at least one optical signal from the light beam through the BPLC device; and at least one output port, configured to output the at least one optical signal separated by the wavelength separation apparatus respectively. With the wavelength selective switch and the wavelength selection method, a polarization-independent phase modulation can be realized without a depolarization device disposed in an optical path, which thereby simplifies an optical path, reduces an insertion loss, and lowers costs of the wavelength selective switch and even the entire optical communication system.