GB9215554D0 - Modulation depth control for fsk/im optical transmitter - Google Patents
Modulation depth control for fsk/im optical transmitterInfo
- Publication number
- GB9215554D0 GB9215554D0 GB9215554A GB9215554A GB9215554D0 GB 9215554 D0 GB9215554 D0 GB 9215554D0 GB 9215554 A GB9215554 A GB 9215554A GB 9215554 A GB9215554 A GB 9215554A GB 9215554 D0 GB9215554 D0 GB 9215554D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- fsk
- optical transmitter
- depth control
- modulation depth
- modulation
- 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.)
- Granted
Links
Classifications
-
- 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
- H04B10/50—Transmitters
- H04B10/564—Power control
-
- 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
- H04B10/50—Transmitters
-
- 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
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
- H04B10/504—Laser transmitters using direct modulation
-
- 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
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
- H04B10/54—Intensity modulation
- H04B10/541—Digital intensity or amplitude modulation
-
- 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
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
- H04B10/548—Phase or frequency modulation
- H04B10/556—Digital modulation, e.g. differential phase shift keying [DPSK] or frequency shift keying [FSK]
- H04B10/5563—Digital frequency modulation
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optics & Photonics (AREA)
- Optical Communication System (AREA)
- Semiconductor Lasers (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9215554A GB2269067B (en) | 1992-07-22 | 1992-07-22 | Modulation depth control for FSK/IM optical transmitter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9215554A GB2269067B (en) | 1992-07-22 | 1992-07-22 | Modulation depth control for FSK/IM optical transmitter |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9215554D0 true GB9215554D0 (en) | 1992-09-02 |
GB2269067A GB2269067A (en) | 1994-01-26 |
GB2269067B GB2269067B (en) | 1995-10-25 |
Family
ID=10719100
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9215554A Expired - Fee Related GB2269067B (en) | 1992-07-22 | 1992-07-22 | Modulation depth control for FSK/IM optical transmitter |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2269067B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004061956A (en) * | 2002-07-30 | 2004-02-26 | Fujitsu Ltd | Optical transmitter/receiver and its controlling method |
CN111817782B (en) * | 2020-06-24 | 2021-10-12 | 武汉光迅科技股份有限公司 | Calibration method, device, equipment and storage medium |
-
1992
- 1992-07-22 GB GB9215554A patent/GB2269067B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
GB2269067A (en) | 1994-01-26 |
GB2269067B (en) | 1995-10-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20080722 |