# US 2018/0323874 A1 · Method And System For A Bi-Directional Multi-Wavelength Receiver For Standdard Single-Mode Fiber Based On Grating Couplers > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0323874 A1 - Document ID: US20180323874A1 - Status: Published application - Kind: A1 - Application number: 16/030,391 - Filed: 2018-07-09 - Published: 2018-11-08 - Earliest claimed: 2014-02-03 - Assignees: Luxtera, Inc. - Applicants: Luxtera, Inc. - Inventors: Peter DeDobbelaere; Christopher Bergey; Attila Mekis - Web page: https://patentgrep.com/patent/US20180323874A1 ## CPC - H04B 10/2589: {Bidirectional transmission} - G02B 6/12007: {forming wavelength selective elements, e.g. multiplexer, demultiplexer} - G02B 6/124: Geodesic lenses or integrated gratings - G02B 6/305: {and having an integrated mode-size expanding section, e.g. tapered waveguide} - G02B 6/34: utilising prism or grating {(G02B6/293 takes precedence)} - H04B 10/40: Transceivers - H04B 10/506: {Multiwavelength transmitters} - H04J 14/0202: {Arrangements therefor} - H04B: TRANSMISSION - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S) ## Abstract Methods and systems for a bi-directional receiver for standard single-mode fiber based on grating couplers may include, in an integrated circuit, a multi-wavelength grating coupler, and first and second optical sources coupled to the integrated circuit: coupling first and second source optical signals at first and second wavelengths into the photonically-enabled integrated circuit using the first and second optical sources, where the second wavelength is different from the first wavelength, receiving a first optical data signal at the first wavelength from an optical fiber coupled to the multi-wavelength grating coupler, and receiving a second optical data signal at the second wavelength from the optical fiber. Third and fourth optical data signals at the first and second wavelengths may be communicated out of the optoelectronic transceiver via the multi-wavelength grating coupler. ## Claims ### Claim 1 A method for communication, the method comprising: in an integrated circuit comprising a multi-wavelength grating coupler and first and second optical sources coupled to the integrated circuit: coupling a first source optical signal at a first wavelength into the integrated circuit using the first optical source; coupling a second source optical signal at a second wavelength different from the first wavelength into the integrated circuit using the second optical source; receiving a first optical data signal at the first wavelength from an optical fiber coupled to the multi-wavelength grating coupler; and receiving a second optical data signal at the second wavelength from the optical fiber coupled to the multi-wavelength grating coupler. ### Claim 2 (depends on 1) The method according to claim 1, comprising communicating a third optical data signal at the first wavelength out of the integrated circuit via the multi-wavelength grating coupler. ### Claim 3 (depends on 2) The method according to claim 2, comprising communicating a fourth optical data signal at the second wavelength out of the integrated circuit via a second multi-wavelength grating coupler. ### Claim 4 (depends on 1) The method according to claim 1, wherein the integrated circuit comprises a complementary metal-oxide semiconductor (CMOS) chip. ### Claim 5 (depends on 1) The method according to claim 1, wherein the optical fiber comprises a single mode fiber. ### Claim 6 (depends on 1) The method according to claim 1, wherein the multi-wavelength grating coupler comprises sections of curved waveguides, a first section configured for the first wavelength and a second section configured for the second wavelength. ### Claim 7 (depends on 1) The method according to claim 1, wherein the multi-wavelength grating coupler comprises a two-dimensional array of scattering elements located at intersections of two one-dimensionally periodic gratings. ### Claim 8 A system for communication, the system comprising: an integrated circuit comprising a multi-wavelength grating coupler and first and second optical sources coupled to the integrated circuit, said integrated circuit being operable to: couple a first source optical signal at a first wavelength into the integrated circuit using the first optical source; couple a second source optical signal at a second wavelength different from the first wavelength into the integrated circuit using the second optical source; receive a first optical data signal at the first wavelength from an optical fiber coupled to the multi-wavelength grating coupler; and receive a second optical data signal at the second wavelength from the optical fiber coupled to the multi-wavelength grating coupler. ### Claim 9 (depends on 8) The system according to claim 8, wherein the integrated circuit is operable to communicate a third optical data signal at the first wavelength out of the integrated circuit via the multi-wavelength grating coupler. ### Claim 10 (depends on 8) The system according to claim 8, wherein the integrated circuit is operable to communicate a fourth optical data signal at the second wavelength out of the integrated circuit via a second multi-wavelength grating coupler. ### Claim 11 (depends on 8) The system according to claim 8, wherein the integrated circuit comprises a complementary metal-oxide semiconductor (CMOS) chip. ### Claim 12 (depends on 8) The system according to claim 8, wherein the optical fiber comprises a single mode fiber. ### Claim 13 (depends on 8) The system according to claim 8, wherein the multi-wavelength grating coupler comprises sections of curved waveguides, a first section configured for the first wavelength and a second section configured for the second wavelength. ### Claim 14 (depends on 8) The system according to claim 8, wherein the multi-wavelength grating coupler comprises a two-dimensional array of scattering elements located at intersections of two one-dimensionally periodic gratings. ### Claim 15 A system for communication, the system comprising: an integrated circuit comprising first and second grating couplers, said photonically-enabled integrated circuit being operable to: communicate a first optical data signal from the integrated circuit into a first fiber coupled to the first grating coupler; receive a second optical data signal from the first optical fiber coupled to the first grating coupler; communicate a third optical data signal from the integrated circuit into a second optical fiber coupled to the second grating coupler; and receive a fourth optical data signal from the second optical fiber coupled to the second grating coupler. ### Claim 16 (depends on 15) The system according to claim 15, wherein the first and third optical data signals are at a first wavelength. ### Claim 17 (depends on 16) The system according to claim 16, wherein the second and fourth optical data signals are at a second wavelength different from the first wavelength. ### Claim 18 (depends on 15) The system according to claim 15, wherein the integrated circuit comprises a complementary metal-oxide semiconductor (CMOS) chip. ### Claim 19 (depends on 15) The system according to claim 15, wherein the first and second optical fibers comprise single mode fibers. ### Claim 20 (depends on 15) The system according to claim 15, comprising generating the first optical data signal utilizing a first optical source coupled to the integrated circuit and the second optical data signal utilizing a second optical source coupled to the integrated circuit.