Configuration to multiplex and/or demultiplex the signals of a plurality of optical data channels and method for the production of the configuration

• US 6,574,390 B2
• Filed: 02/15/2001
• Issued: 06/03/2003
• Est. Priority Date: 02/15/2001
• Status: Expired due to Term

• Current Assignee: II-VI Delaware, Inc. (Coherent Corp.)
• Original Assignee: Infineon Technologies AG
• Inventors: Kropp, Jörg-Reinhardt
• Primary Examiner(s): Lester, Evelyn
• Assistant Examiner(s): Dinh, Jack
• Application Number:
  US09/784,767
• Publication Number:
  US 20020110316A1
• Time in Patent Office: 838 Days
• Field of Search: 385/18, 385/24, 385/129, 385/130, 359/115, 359/117, 359/124, 359/127, 359/128
• US Class Current: 385/24
• CPC Class Codes: G02B 6/29368 Light guide comprising the filter, e.g. filter deposited on a fibre end G02B6/29359 takes precedence
• CPC Class Codes: G02B 6/2938 for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM
• CPC Class Codes: G02B 6/4214 the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device G02B6/4246 takes precedence

Abstract

The invention relates to an arrangement for multiplexing and/or demultiplexing the signals of a plurality of optical data channels of different wavelength, in which the multiplexed signals are transmitted in a waveguide (1). According to the invention, the waveguide (1) is disposed or embodied in a planar substrate (2), which has a plurality of cutouts (3) extending at a defined angle, which interrupt the waveguide (1) at successive points, and one wavelength-selective mirror (4) is disposed in each of these cutouts (3), at which mirror light is coupled in or out obliquely to the surface of the substrate (2). The invention further relates to a method for producing such an arrangement.

Claims

1. A configuration for multiplexing and/or demultiplexing signals of a plurality of optical data channels of different wavelength, the configuration comprising:

a waveguide for transmitting the signals;

a plurality of wavelength-selective mirrors; and

a planar substrate having a planar surface and an edge and being formed with a plurality of cutouts each extending at a defined angle, said defined angle being different than 90°

with respect to said planar surface;

said waveguide disposed in said substrate, said plurality of said cutouts interrupting said waveguide at successive points;

a respective one of said plurality of said wavelength-selective mirrors disposed in each one of said plurality of said cutouts causing mirror light to be coupled obliquely to said planar surface of said substrate and to pass through said planar surface.

2. The configuration according to claim 1, wherein each one of said plurality of said cutouts has a common angle relative to said planar surface of said substrate.

3. The configuration according to claim 1, comprising:

an adhesive having a coefficient of diffraction, said adhesive positioning said plurality of said mirrors in said plurality of said cutouts;

said waveguide having at least a similar coefficient of diffraction as said coefficient of diffraction of said adhesive.

4. The configuration according to claim 3, wherein said coefficient of diffraction of said waveguide is the same as said coefficient of diffraction of said adhesive.

5. The configuration according to claim 1, wherein said waveguide is embodied in a form selected from the group consisting of an optically integrated waveguide and a fiber.

6. The configuration according to claim 1, wherein said waveguide is formed from a material selected from the group consisting of a glass and a plastic.

7. The configuration according to claim 1, wherein said waveguide includes semiconductor material.

8. The configuration according to claim 1, wherein said waveguide is a multi-mode waveguide.

9. The configuration according to claim 1, wherein said plurality of said wavelength-selective mirrors are semiconductor materials.

10. The configuration according to claim 1, comprising:

a unit selected from the group consisting of a transmitter unit for coupling light into said waveguide using said plurality of said mirrors and a receiver unit for coupling light out of said waveguide using said plurality of said mirrors;

said unit disposed directly on said planar surface of said planar substrate.

11. The configuration according to claim 1, comprising guide structures integrated into said substrate, said guide structures for attaching further optical waveguides.

12. The configuration according to claim 1, wherein said guide structures are anisotropically etched guide structures.

13. The configuration according to claim 1, wherein said waveguide extends adjacent said edge.

14. The configuration according to claim 1, wherein said substrate is silicon.

15. The configuration according to claim 1, wherein said substrate is plastic.

16. A method for producing a configuration for multiplexing and/or demultiplexing signals of a plurality of optical data channels of different wavelength, the method which comprises:

providing a waveguide for transmitting the signals;

providing a plurality of wavelength-selective mirrors;

providing a planar substrate having a planar surface;

placing the waveguide in the substrate;

forming a plurality of cutouts in the substrate, the plurality of cutouts extending at a defined angle other than 90°

relative to the planar surface of the substrate;

placing the plurality of the wavelength-selective mirrors in the cutouts causing mirror light to be coupled obliquely to the planar surface of the substrate and to pass through the planar surface; and

cutting apart the waveguide at a plurality of successive points.

17. The method according to claim 16, which comprises using an adhesive to position the plurality of the wavelength-selective mirrors in the cutouts.

18. The method according to claim 16, which comprises forming the plurality of the cutouts as lateral cutouts.

19. The method according to claim 16, which comprises using a wafer saw to form the plurality of the cutouts.

20. The method according to claim 16, which comprises chemically smoothing surfaces of the plurality of the cutouts.

21. The method according to claim 16, which comprises forming the plurality of the cutouts by etching the substrate.

22. A configuration for multiplexing and/or demultiplexing signals of a plurality of optical data channels of different wavelength, the configuration comprising:

an optically integrated waveguide for transmitting the signals;

a plurality of wavelength-selective mirrors; and

a planar substrate having a planar surface and an edge and being formed with a plurality of cutouts each extending at a defined angle, said defined angle being different than 90°

with respect to said planar surface;

said waveguide disposed in said substrate, said plurality of said cutouts interrupting said waveguide at successive points;

a respective one of said plurality of said wavelength-selective mirrors disposed in each one of said plurality of said cutouts causing mirror light to be coupled obliquely to said planar surface of said substrate and to pass through said planar surface.