CA2146384C - Chromatic dispersion compensation device - Google Patents
Chromatic dispersion compensation deviceInfo
- Publication number
- CA2146384C CA2146384C CA 2146384 CA2146384A CA2146384C CA 2146384 C CA2146384 C CA 2146384C CA 2146384 CA2146384 CA 2146384 CA 2146384 A CA2146384 A CA 2146384A CA 2146384 C CA2146384 C CA 2146384C
- Authority
- CA
- Canada
- Prior art keywords
- mirror
- etalon
- port
- mirrors
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000006185 dispersion Substances 0.000 title claims abstract 5
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical class CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims abstract 27
- 238000012544 monitoring process Methods 0.000 claims abstract 20
- 238000002310 reflectometry Methods 0.000 claims 7
- 230000003287 optical effect Effects 0.000 claims 6
- 238000001514 detection method Methods 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29379—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
- G02B6/29392—Controlling dispersion
- G02B6/29394—Compensating wavelength dispersion
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29346—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by wave or beam interference
- G02B6/29358—Multiple beam interferometer external to a light guide, e.g. Fabry-Pérot, etalon, VIPA plate, OTDL plate, continuous interferometer, parallel plate resonator
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
- H04B10/2513—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion
- H04B10/25133—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion including a lumped electrical or optical dispersion compensator
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2210/00—Indexing scheme relating to optical transmission systems
- H04B2210/25—Distortion or dispersion compensation
- H04B2210/252—Distortion or dispersion compensation after the transmission line, i.e. post-compensation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Lasers (AREA)
- Optical Communication System (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
A chromatic dispersion compensation device is provided in the form of an etalon having first partially reflecting mirror providing an input and output port for porting a signal into and out of the etalon cavity. A second partially reflective mirror parallel to and spaced apart from the first mirror, being more reflective than the first mirror provides a monitoring port for monitoring energy within the cavity. Means are optionally provided for controlling a parameter related to the cavity in dependence upon a signal ported from the monitoring port. Means may be provided to control a transmitting laser in dependence upon the signal ported from the monitoring port.
Claims (20)
1. A device for dispersion compensation comprising:
an etalon having first and second partially reflective mirrors in a parallel spaced relationship, to form a gap between the mirrors, the first partially reflective mirror being substantially less reflective than the second mirror to allow most of an input signal to pass through the first partially reflective mirror, the first mirror having an input/output port for providing the input signal to the gap between the mirrors, the second mirror having at least a region thereof that allows a small amount of the input signal to pass therethough for providing a monitoring port, said monitoring port being substantially optically aligned with said input port.
an etalon having first and second partially reflective mirrors in a parallel spaced relationship, to form a gap between the mirrors, the first partially reflective mirror being substantially less reflective than the second mirror to allow most of an input signal to pass through the first partially reflective mirror, the first mirror having an input/output port for providing the input signal to the gap between the mirrors, the second mirror having at least a region thereof that allows a small amount of the input signal to pass therethough for providing a monitoring port, said monitoring port being substantially optically aligned with said input port.
2. A device as defined in claim 1 further including means coupled to the monitoring port for detecting a characteristic of a monitoring signal derived from the input signal.
3. A device for dispersion compensation comprising:
an etalon having first and second partially reflective mirrors in a parallel spaced relationship, to form a gap between the mirrors, the first partially reflective mirror being substantially less reflective than the second mirror to allow most of an input signal to pass through the first partially reflective mirror, the first mirror having a separate input and output port, the input port for providing the input signal to the gap between the mirrors, and the output port for receiving most of the input signal passed through the input port, the input and output ports on the first mirror being adjacent to one another such that an optical beam launched into the input port and reflecting from the second mirror into the output port of the first mirror has a fold angle greater than but near zero degrees, the second mirror having at least a region thereof that allows a small amount of the input signal to pass therethough for providing a monitoring port, said monitoring port being substantially optically aligned with said input port.
an etalon having first and second partially reflective mirrors in a parallel spaced relationship, to form a gap between the mirrors, the first partially reflective mirror being substantially less reflective than the second mirror to allow most of an input signal to pass through the first partially reflective mirror, the first mirror having a separate input and output port, the input port for providing the input signal to the gap between the mirrors, and the output port for receiving most of the input signal passed through the input port, the input and output ports on the first mirror being adjacent to one another such that an optical beam launched into the input port and reflecting from the second mirror into the output port of the first mirror has a fold angle greater than but near zero degrees, the second mirror having at least a region thereof that allows a small amount of the input signal to pass therethough for providing a monitoring port, said monitoring port being substantially optically aligned with said input port.
4. A device as defined in claim 3, further comprising a second etalon, the second etalon having first and second partially reflective mirrors in a parallel spaced relationship, to form a gap between the mirrors, the first partially reflective mirror being substantially less reflective than the second mirror to allow most of an input signal to pass through the first partially reflective mirror, the first mirror having a separate input and output port, the input port for providing the input signal to the gap between the mirrors, and the output port for receiving most of the input signal passed through the input port, the input and output ports on the first mirror being adjacent to one another such that an optical beam launched into the input port and reflecting from the second mirror into the output port of the first mirror has a fold angle greater than but near zero degrees, the first and second etalons connected in series such that the input port of one of the etalons is connected to the output port of the other etalon.
5. The device as defined in claim 4, wherein the second mirror of the second etalon has at least a region thereof that allows a small amount of the input signal to pass therethough for providing a monitoring port, said monitoring port being substantially optically aligned with said input port.
6. The device as defined in claim 3, further comprising a second etalon having first and second partially reflective mirrors in a parallel spaced relationship, to form a gap between the mirrors, the first partially reflective mirror being substantially less reflective than the second mirror to allow most of an input signal to pass through the first partially reflective mirror, the first mirror having an input/output port for providing the input signal to the gap between the mirrors, the first and second etalons being connected in series.
7. The device as defined in claim 6 wherein the second mirror of the second etalon has at least a region thereof that allows a small amount of the input signal to pass therethough for providing a monitoring port, said monitoring port being substantially optically aligned with said input port.
8. A two port device for dispersion compensation comprising:
a first partially reflective mirror, a second partially reflective mirror having a greater reflectivity than the first mirror, the first and second mirrors being in a parallel spaced relationship defining an optical cavity, first mirror having a single input/output port and the second mirror having a single output monitoring port substantially axially aligned with the first input/output port.
a first partially reflective mirror, a second partially reflective mirror having a greater reflectivity than the first mirror, the first and second mirrors being in a parallel spaced relationship defining an optical cavity, first mirror having a single input/output port and the second mirror having a single output monitoring port substantially axially aligned with the first input/output port.
9. A device as defined in claim 8 comprising detection means coupled to the monitoring port for detecting a characteristic of an optical signal that has passed through the ports.
10. A device as defined in claim 9, wherein the detection means provides opto-electrical conversion.
11. A device as defined in claim 1, further comprising:
a second etalon having first and second partially reflective mirrors in a parallel spaced relationship, to form a gap between the mirrors, the first partially reflective mirror being substantially less reflective than the second mirror to allow most of an input signal to pass through the first partially reflective mirror, the first mirror having an input/output port for providing the input signal to the gap between the mirrors, the second mirror having at least a region thereof that allows a small amount of the input signal to pass therethough for providing a monitoring port, said monitoring port being substantially optically aligned with said input port, the first and second etalons having their input/output ports arranged in series so that most of a signal launched into the first etalon later propagates into the second etalon after traversing the first etalon.
a second etalon having first and second partially reflective mirrors in a parallel spaced relationship, to form a gap between the mirrors, the first partially reflective mirror being substantially less reflective than the second mirror to allow most of an input signal to pass through the first partially reflective mirror, the first mirror having an input/output port for providing the input signal to the gap between the mirrors, the second mirror having at least a region thereof that allows a small amount of the input signal to pass therethough for providing a monitoring port, said monitoring port being substantially optically aligned with said input port, the first and second etalons having their input/output ports arranged in series so that most of a signal launched into the first etalon later propagates into the second etalon after traversing the first etalon.
12. A device as defined in claim 4, wherein the distance d1 between the parallel spaced mirrors of the first etalon is not equal to the distance d2 between the parallel spaced mirrors of the second etalon.
13 13. A device as defined in claim 11, wherein the distance d1 between the parallel spaced mirrors of the first etalon is not equal to the distance d2 between the parallel spaced mirrors of the second etalon.
14. A device as defined in claim 13, wherein the first mirror of the first etalon has a reflectivity R1 which differs from a reflectivity R2 of the first mirror of the second etalon.
15. A device as defined in claim 6, wherein the first mirror of the first etalon has a reflectivity R1 which differs from a reflectivity R2 of the first mirror of the second etalon.
16 A device as defined in claim 4, wherein the first mirror of the first etalon has a reflectivity R1 which differs from a reflectivity R2 of the first mirror of the second etalon.
17. A device as defined in claim 6, wherein the distance d1 between the parallel spaced mirrors of the first etalon is not equal to the distance d2 between the parallel spaced mirrors of the second etalon.
18. A device as defined in claim 1, including means for varying the optical distance between the mirrors in dependence upon a control signal provided at the monitoring port.
19. A device as defined in claim 3, including means for varying the optical distance between the first and second mirrors in dependence upon a control signal provided at the monitoring port.
20. A device as defined in claim 1, wherein the etalon is comprised of a block of light transmitting material, and wherein the first and second partially reflective mirrors are coated on end faces of the block.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2146384 CA2146384C (en) | 1995-04-05 | 1995-04-05 | Chromatic dispersion compensation device |
| PCT/CA1996/000201 WO1996031961A1 (en) | 1995-04-05 | 1996-04-03 | Chromatic dispersion compensation device |
| AU52632/96A AU5263296A (en) | 1995-04-05 | 1996-04-03 | Chromatic dispersion compensation device |
| JP8529816A JPH11511862A (en) | 1995-04-05 | 1996-04-03 | Chromatic dispersion compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2146384 CA2146384C (en) | 1995-04-05 | 1995-04-05 | Chromatic dispersion compensation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2146384A1 CA2146384A1 (en) | 1996-10-06 |
| CA2146384C true CA2146384C (en) | 1999-05-11 |
Family
ID=4155585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2146384 Expired - Fee Related CA2146384C (en) | 1995-04-05 | 1995-04-05 | Chromatic dispersion compensation device |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA2146384C (en) |
| WO (1) | WO1996031961A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5930045A (en) | 1995-07-26 | 1999-07-27 | Fujitsu, Ltd. | Optical apparatus which uses a virtually imaged phased array to produce chromatic dispersion |
| JP4030763B2 (en) | 2002-01-16 | 2008-01-09 | 富士通株式会社 | Transmission band flattened dispersion compensator |
| CN114449237B (en) * | 2020-10-31 | 2023-09-29 | 华为技术有限公司 | Method for anti-distortion and anti-dispersion and related equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5023947A (en) * | 1989-11-01 | 1991-06-11 | At&T Bell Laboratories | Optical equalization receiver for lightwave communication systems |
-
1995
- 1995-04-05 CA CA 2146384 patent/CA2146384C/en not_active Expired - Fee Related
-
1996
- 1996-04-03 WO PCT/CA1996/000201 patent/WO1996031961A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CA2146384A1 (en) | 1996-10-06 |
| WO1996031961A1 (en) | 1996-10-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20140407 |