Hong Kong Polytechnic University Manuals

Hong Kong Polytechnic University CN 107688250 B Liquid Crystal Optical Cross-Connect Device Patent

This is a Chinese invention patent (grant publication CN 107688250 B, application 201710855251.1, filed 2017-09-20, granted 2020-07-03) held by the Hong Kong Polytechnic University Shenzhen Research Institute. It describes an optical cross-connect device whose body is made up of an array of optical switches based on liquid crystal electro-optic waveguides, aimed at N x N multi-port optical signal switching for data center applications.

The text gives the claims, a background on MEMS micro-mirror and LCoS cross-connects and on planar waveguide switches, a summary of the invention, a list of the five figures, and an embodiment. The layer stack is described from the top SiO2 layer down through a common electrode layer, alignment films, the liquid crystal layer, an insulating layer containing the drive electrode layer, a metal protective layer and the CMOS switch array layer, to the silicon substrate. This manual is written in Chinese.

Covers: Claims · Technical Field · Background · Summary of the Invention · Description of the Drawings · Embodiments