IP Library Granted Patent US 10,615,900
Granted Patent B2
US 10,615,900 · App. 16/505,349 · Granted Apr 7, 2020

Method and system for cassette based wavelength division multiplexing

Inventor: Brian Welch (San Diego, CA)
Assignee: Luxtera, Inc.
H04J14/02G02B6/12007G02B6/428G02B6/4215H04B10/40G02B6/30G02B6/34G02B6/4249G02B6/4292
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Quick Facts
Patent No.
US 10,615,900
App. No.
16/505,349
Granted
Apr 7, 2020
Kind
B2
Abstract

A method and system is provided for cassette based wavelength division multiplexing and may include an optical system with an aggregating cassette. The optical system may include optical transceivers, with each generating optical signals at a different wavelength. The aggregating cassette may include one or more multiplexers coupled to each of the optical transceivers via optical fibers. The optical transceivers may generate modulated optical signals at one of the different wavelengths. The optical fibers may communicate one of the modulated optical signals from each of the optical transceivers to the one or more multiplexers. The modulated optical signals may be multiplexed to one or more output optical fibers. The multiplexed signals may be communicated to one or more receiving demultiplexers using the one or more output optical fibers. The one or more demultiplexers may demultiplex the multiplexed signals into separate wavelength signals.

Claims (32)

1. A method for optical communication, the method comprising:

in an optical system comprising an aggregating cassette and N optical transceivers, where N is an integer greater than one, said aggregating cassette comprising N multiplexers coupled to the N optical transceivers:

generating, by each of said N optical transceivers, a modulated optical signal at a wavelength different from optical signals from others of said N transceivers, wherein each optical signal is split into N optical signals and modulated by modulators in said N optical transceivers;

communicating, using optical fibers, said N modulated optical signals from each of said N optical transceivers to each of said N multiplexers; and

multiplexing, using said N multiplexers, N modulated optical signals at N different wavelengths to output optical fibers.

2. The method according to claim 1 , comprising communicating said multiplexed signals to one or more receiving demultiplexers using said optical fibers.

3. The method according to claim 2 , comprising demultiplexing, using said N demultiplexers, said multiplexed signals into separate wavelength signals.

4. The method according to claim 3 , comprising communicating said separate wavelength signals to a corresponding receive optical system comprising one or more receive optical transceivers.

5. The method according to claim 1 , wherein each of said plurality of optical transceivers comprises a laser source coupled to a silicon photonics die.

6. The method according to claim 1 , wherein each of said plurality of optical transceivers comprises two laser sources coupled to a silicon photonics die.

7. The method according to claim 1 , comprising demultiplexing optical signals received from said optical fibers.

8. The method according to claim 1 , wherein said different wavelengths are centered around 1300 nm.

9. The method according to claim 1 , wherein said plurality of optical transceivers are integrated on a plurality of silicon photonics die.

10. The method according to claim 1 , wherein said each of said optical transceivers is integrated on a separate silicon photonics die.

11. A system for optical communication, the system comprising:

an optical system comprising an aggregating cassette and N optical transceivers, where N is an integer greater than one, said aggregating cassette comprising N multiplexers coupled to each of the N optical transceivers, said optical system being operable to:

generate, by each of said N optical transceivers, a modulated optical signal at a wavelength different from optical signals from others of said N transceivers, wherein each optical signal is split into N optical signals and modulated by modulators in said N optical transceivers;

communicate, using optical fibers, said N modulated optical signals from each of said N optical transceivers to said N multiplexers; and

multiplex, using said N multiplexers, said N modulated optical signals at N different wavelengths to output optical fibers.

12. The system according to claim 11 , wherein said optical system is operable to communicate said multiplexed signals to one or more receiving demultiplexers using said optical fibers.

13. The system according to claim 12 , wherein said optical system is operable to demultiplex, using said N demultiplexers, said multiplexed signals into separate wavelength signals.

14. The system according to claim 13 , wherein said optical system is operable to communicate said separate wavelength signals to a corresponding receive optical system comprising one or more receive optical transceivers.

15. The system according to claim 11 , wherein each of said plurality of optical transceivers comprises a laser source coupled to a silicon photonics die.

16. The system according to claim 11 , wherein each of said plurality of optical transceivers comprises two laser sources coupled to a silicon photonics die.

17. The system according to claim 11 , wherein said optical system is operable to demultiplex optical signals received from said optical fibers.

18. The system according to claim 11 , wherein said different wavelengths are centered around 1300 nm.

19. The system according to claim 11 , wherein said plurality of optical transceivers are integrated on a plurality of silicon photonics die.

20. A system for optical communication, the system comprising:

an optical system comprising an aggregating cassette and N optical transceivers, where N is an integer greater than one, said aggregating cassette comprising N multiplexers coupled to each of the N optical transceivers, said optical system being operable to:

generate, by each of said N optical transceivers, a modulated optical signal at a wavelength different from optical signals from others of said N transceivers wherein each optical signal is split into N optical signals and modulated by modulators in said N optical transceivers;

communicate, using optical fibers, said N modulated optical signals from each of said N optical transceivers to said N multiplexers; and

multiplex, using said N multiplexers, said N modulated optical signals at N different wavelengths to output optical fibers.

Assignments (4)
CORRECTIVE ASSIGNMENT TO CORRECT THE THE ASSIGNOR'S NAME PREVIOUSLY RECORDED AT REEL: 058979 FRAME: 0027. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Mar 24, 2022
From: LUXTERA LLC
To: CISCO TECHNOLOGY, INC.
Reel/Frame 059496/0803 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 8, 2022
From: CISCO SYSTEMS, INC.
To: CISCO TECHNOLOGY, INC.
Reel/Frame 058979/0027 →
CHANGE OF NAME Recorded Feb 6, 2020
From: LUXTERA, INC.
To: LUXTERA LLC
Reel/Frame 052019/0811 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 8, 2019
From: WELCH, BRIAN
To: LUXTERA, INC.
Reel/Frame 049691/0917 →