US 11,656,515 B2
WSS utilizing LCOS arrays comprising rectangular pixels
Julian Armstrong, Sydney (AU); Luke Stewart, Gladesville (AU); Glenn Wayne Baxter, Hornsby Heights (AU); and Jonathan Plumridge, Sydney (AU)
Assigned to II-VI DELAWARE, INC, Wilmington, DE (US)
Filed by II-VI Delaware, Inc, Wilmington, DE (US)
Filed on Jun. 25, 2021, as Appl. No. 17/304,824.
Prior Publication US 2022/0413346 A1, Dec. 29, 2022
Int. Cl. G02F 1/1362 (2006.01); G02B 6/35 (2006.01)
CPC G02F 1/136277 (2013.01) [G02F 1/13624 (2013.01); G02B 6/356 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of determining pixel specifications of a liquid crystal on silicon (LCOS) device for use in one or more wavelength selective switches (WSS), the method including:
determining one of a number and a position of optical ports of the one or more WSS, the optical ports configured to transmit optical signals;
calculating a range of switching angles required to switch optical channels between the optical ports;
determining, based on the range of switching angles, for a plurality of pixels formed in the LCOS device, a first pixel size that is a length of each of the plurality of pixels located along a switching axis of the LCOS device, a first number of pixels that is a number of the plurality of pixels in the LCOS device located along the switching axis, a second pixel size that is a length of each of the plurality of pixels located along a dispersive axis of the LCOS device, and a second number of pixels that is a number of the plurality of pixels in the LCOS device located along the dispersive axis; and
setting the plurality of pixels of the LCOS device to be rectangular and having a degree of rectangularity based on the first pixel size and the first number of pixels located along the switching axis.