Claims
- 1. An optical delay line for delaying optical signals and optical phases comprising:
a) a plurality of radiation guides; and b) a plurality of optical couplers having fist and second terminals coupled to a coupling region having reflecting surface, each of said first and second terminals associated with one of said plurality of radiation guides to form an optical radiation path with substantially low back reflection.
- 2. The delay line of claim 1 wherein said radiation waveguide manufactured on a chip.
- 3. The delay line of claim 1 wherein said plurality of optical couplers are directional couplers.
- 4. The delay line of claim 1 wherein the length of said coupling region, between said first and second terminals and said reflecting surface adjusted to reflect most of the intensity of a beam entering from one of said first terminals into one of said second terminals.
- 5. The delay line of claim 1 wherein said reflecting surface is a cleaved side wall of a substrate on which said delay line is produced.
- 6. The delay line of claim 5 wherein said cleaved side wall is coated by a reflecting layer.
- 7. The delay line of claim 1 wherein said reflecting surface is a polished side wall of a substrate on which said delay line is produced.
- 8. The delay line of claim 7 wherein said polished side wall is coated by a reflecting layer.
- 9. An optical delay line for delaying optical signals and optical phases comprising:
a) a plurality of radiation guides; and b) a plurality of optical couplers having fist and second terminals coupled to a coupling region having reflecting grating, each of said first and second terminals associated with one of said plurality of radiation guides to form an optical radiation path with substantially low back reflection.
- 10. The delay line of claim 9 wherein said radiation waveguide manufactured of a chip.
- 11. The delay line of claim 9 wherein said plurality of optical couplers are directional couplers.
- 12. The delay line of claim 9 wherein the location of said reflecting grating on said coupling region adjusted to reflect most of the intensity of a beam entering from one of said first terminals into one of said second terminals.
- 13. An optical delay line for delaying optical signals and optical phases comprising:
a) a plurality of radiation guides; and b) a plurality of optical couplers having fist second third and fourth terminals, each of said third and forth terminals has a reflecting grating, each of said first and second terminals associated with one of said plurality of radiation guides to form an optical radiation path with substantially low back reflection.
- 14. The delay line of claim 13 wherein said radiation guides are waveguides.
- 15. The delay line of claim 14 wherein said radiation waveguide manufactured on a chip.
- 16. The delay line of claim 13 wherein said plurality of optical couplers are directional couplers.
- 17. The delay line of claim 13 wherein the locations of said reflecting grating on each said third and fourth terminals adjusted to reflect most of the intensity of a beam entering from one of said first terminals into one of said second terminals.
- 18. An optical delay line for delaying optical signals and optical phases comprising a core of an open loop of a radiation guide forming a pair of radiation waveguide connected in one of their edges and turned around said core of said opened loop.
- 19. The delay line of claim 18 wherein said radiation guides are waveguides.
- 20. The delay line of claim 19 wherein said radiation waveguide manufactured on a chip.
REFERENCE TO OTHER APPLICATIONS
[0001] This application claims the benefit of U.S. Provisional Patent Application Serial No. 60/405,697, filed Aug. 22, 2002, entitled “Streaming signal control system for digital communications”, and of U.S. Provisional Patent Application Serial No. 60/420,112, filed Oct. 21, 2002, entitled “Streaming signal control system for digital communications”.
Provisional Applications (2)
|
Number |
Date |
Country |
|
60405697 |
Aug 2002 |
US |
|
60420112 |
Oct 2002 |
US |