IT1077697B - Dispositivo ottico per trasmettere impulsi - Google Patents
Dispositivo ottico per trasmettere impulsiInfo
- Publication number
- IT1077697B IT1077697B IT21163/77A IT2116377A IT1077697B IT 1077697 B IT1077697 B IT 1077697B IT 21163/77 A IT21163/77 A IT 21163/77A IT 2116377 A IT2116377 A IT 2116377A IT 1077697 B IT1077697 B IT 1077697B
- Authority
- IT
- Italy
- Prior art keywords
- optical device
- transmit impulses
- impulses
- transmit
- optical
- Prior art date
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
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
- H04B10/504—Laser transmitters using direct modulation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3084—Automatic control in amplifiers having semiconductor devices in receivers or transmitters for electromagnetic waves other than radiowaves, e.g. lightwaves
-
- 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
- H04B10/508—Pulse generation, e.g. generation of solitons
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/666,579 US4008390A (en) | 1976-03-15 | 1976-03-15 | Optical pulse transmission system |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1077697B true IT1077697B (it) | 1985-05-04 |
Family
ID=24674608
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT21163/77A IT1077697B (it) | 1976-03-15 | 1977-03-10 | Dispositivo ottico per trasmettere impulsi |
Country Status (8)
Country | Link |
---|---|
US (1) | US4008390A (it) |
JP (1) | JPS52112202A (it) |
BE (1) | BE852328A (it) |
CA (1) | CA1073056A (it) |
DE (1) | DE2710875A1 (it) |
FR (1) | FR2345014A1 (it) |
IT (1) | IT1077697B (it) |
NL (1) | NL7702722A (it) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE31969E (en) * | 1976-03-22 | 1985-08-13 | At&T Bell Laboratories | Laser control circuit |
US4075474A (en) * | 1977-04-19 | 1978-02-21 | Northern Telecom Limited | Method and apparatus for distortion reduction in optical communication systems |
IT1091439B (it) * | 1977-10-13 | 1985-07-06 | Studi E Lab Telcomunicazioni S | Procedimento e sistema di modulazione e demodulazione per trasmissione numerica |
DE2847182C3 (de) * | 1978-10-30 | 1986-07-10 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Verfahren zur Modulationsstromregelung von Laserdioden |
CH640379A5 (de) * | 1978-12-01 | 1983-12-30 | Bbc Brown Boveri & Cie | Verfahren und einrichtung zur signaluebertragung. |
US4373781A (en) * | 1979-02-12 | 1983-02-15 | Gte Laboratories Incorporated | Acoustic to optical pulse code modulating transducer |
JPS55138935A (en) * | 1979-04-17 | 1980-10-30 | Hitachi Ltd | Light transmitting and receiving system |
DE2944459C2 (de) * | 1979-11-03 | 1984-04-26 | ANT Nachrichtentechnik GmbH, 7150 Backnang | Verfahren zum Übertragen von Bipolarsignalen mittels eines optischen Senders |
DE3044620A1 (de) * | 1980-11-27 | 1982-07-08 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Digitales nachrichtenuebertragungssystem |
US4403139A (en) * | 1981-04-20 | 1983-09-06 | Bell Telephone Laboratories, Incorporated | Redundant light source circuit |
US4549314A (en) * | 1981-12-25 | 1985-10-22 | Canon Kabushiki Kaisha | Optical communication apparatus |
FR2524741B1 (fr) * | 1982-03-30 | 1985-09-06 | Lignes Telegraph Telephon | Dispositif de restitution d'informations transmises sur une fibre optique et recepteur comportant un tel dispositif |
US4641371A (en) * | 1985-01-16 | 1987-02-03 | Westinghouse Electric Corp. | Multi-star fiber optic network |
US4847507A (en) * | 1988-01-19 | 1989-07-11 | John Fluke Mfg. Co., Inc. | Fiber optic guard crossing of circuits having analog and digital sections |
US4982139A (en) * | 1989-04-03 | 1991-01-01 | At&T Bell Laboratories | Method and apparatus for controlling light intensity |
US5046138A (en) * | 1989-06-26 | 1991-09-03 | General Instrument Corporation | Self-aligning analog laser transmitter |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3590249A (en) * | 1968-10-02 | 1971-06-29 | Ibm | Optical read system |
US3714437A (en) * | 1970-08-14 | 1973-01-30 | Bell Telephone Labor Inc | Optical communication system with pcm encoding with plural discrete unequally spaced intensity levels |
JPS5116114B1 (it) * | 1971-07-28 | 1976-05-21 | ||
GB1468165A (en) * | 1973-06-01 | 1977-03-23 | Plessey Co Ltd | Line data and television transmission |
-
1976
- 1976-03-15 US US05/666,579 patent/US4008390A/en not_active Expired - Lifetime
-
1977
- 1977-02-02 CA CA270,928A patent/CA1073056A/en not_active Expired
- 1977-03-09 FR FR7706918A patent/FR2345014A1/fr not_active Withdrawn
- 1977-03-10 IT IT21163/77A patent/IT1077697B/it active
- 1977-03-10 BE BE175680A patent/BE852328A/xx unknown
- 1977-03-12 DE DE19772710875 patent/DE2710875A1/de active Pending
- 1977-03-14 NL NL7702722A patent/NL7702722A/xx not_active Application Discontinuation
- 1977-03-15 JP JP2768377A patent/JPS52112202A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
FR2345014A1 (fr) | 1977-10-14 |
BE852328A (fr) | 1977-07-01 |
NL7702722A (nl) | 1977-09-19 |
DE2710875A1 (de) | 1977-09-22 |
CA1073056A (en) | 1980-03-04 |
US4008390A (en) | 1977-02-15 |
JPS52112202A (en) | 1977-09-20 |
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