US 12,405,425 B2
Wavelength multiplexer/demultiplexer using metamaterials for optical fiber communications
Federico Capasso, Cambridge, MA (US); Wei-Ting Chen, Plainsboro, NJ (US); Paulo Clovis Dainese, Jr., Painted Post, NY (US); Kangmei Li, San Jose, CA (US); Ming-Jun Li, Horseheads, NY (US); Jaewon Oh, Cambridge, MA (US); and Jun Yang, Horseheads, NY (US)
Assigned to CORNING INCORPORATED, Corning, NY (US); and HARVARD COLLEGE, Cambridge, MA (US)
Appl. No. 17/795,928
Filed by CORNING INCORPORATED, Corning, NY (US); and President and Fellows of Harvard College, Cambridge, MA (US)
PCT Filed Jan. 29, 2021, PCT No. PCT/US2021/015918
§ 371(c)(1), (2) Date Jul. 28, 2022,
PCT Pub. No. WO2021/155302, PCT Pub. Date Aug. 5, 2021.
Claims priority of provisional application 62/968,531, filed on Jan. 31, 2020.
Prior Publication US 2023/0085821 A1, Mar. 23, 2023
Int. Cl. G02B 6/293 (2006.01); G02B 1/00 (2006.01)
CPC G02B 6/29367 (2013.01) [G02B 1/002 (2013.01); G02B 6/2938 (2013.01)] 24 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a first substrate that is optically transmissive;
a first stage of metamaterials in contact with the first substrate;
a second stage of metamaterials in contact with the first substrate;
a reflector positioned opposite the first substrate and configured to reflect an optical signal that passes through the first stage of metamaterials to pass through the first stage of metamaterials again, wherein:
the first stage of metamaterials and the second stage of metamaterials are configured to multiplex a first optical signal having a first wavelength and a second optical signal having a second wavelength into a third optical signal having the first wavelength and the second wavelength, wherein the first stage of metamaterials and the second stage of metamaterials each have a respective phase profile configured to multiplex the first optical signal and the second optical signal into the third optical signal based at least in part on shifting a first phase profile of the first optical signal and shifting a second phase profile of the second optical signal; and
an optical fiber configured for transmission of the third optical signal to one or more receivers based at least in part on the third optical signal being modulated with information.