GB1407227A - Repeater amplifiers for telecommunications transmission systems - Google Patents
Repeater amplifiers for telecommunications transmission systemsInfo
- Publication number
- GB1407227A GB1407227A GB4330672A GB4330672A GB1407227A GB 1407227 A GB1407227 A GB 1407227A GB 4330672 A GB4330672 A GB 4330672A GB 4330672 A GB4330672 A GB 4330672A GB 1407227 A GB1407227 A GB 1407227A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fibre
- diode
- laser
- waveguide
- sept
- 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
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
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
- H04B10/2912—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing
- H04B10/2914—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing using lumped semiconductor optical amplifiers [SOA]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/50—Amplifier structures not provided for in groups H01S5/02 - H01S5/30
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Plasma & Fusion (AREA)
- Signal Processing (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Optical Integrated Circuits (AREA)
- Lasers (AREA)
- Semiconductor Lasers (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
1407227 Lasers SIEMENS AG 19 Sept 1972 [24 Sept 1971] 43306/72 Heading H1C Light signals in an optical waveguide forming part of a telecommunications system are amplified by a semiconductor laser. Fig. 1 shows a diode laser amplifier body 9 matched to two optical fibres 5 by epoxy resin couplers 8. The diode and the fibres are clad with materials 10 and 6 respectively of lower refractive index. The diode pumping current is supplied by leads 11, 12, and the assembly is adhered to a body 1 by layer 2. The diode faces may be made non- parallel to prevent oscillation, Fig. 2 (not shown), or may be provided with reflectors to give multiple or zig-zag paths through the gain region, Figs. 3, 4 (not shown). In Fig. 5 the active medium 18 has a region 17 adjacent the waveguide fibre and amplifies surface light emitted from the fibre; the amplified light couples back into the fibre. This embodiment avoids reflections back along the fibre since the fibre is continuous. This device may be made on a carrier body by first forming the laser then vapour depositing the associated parts of the waveguide. The amplifier dimensions preferably restrict operation to a single mode. Pumping may alternatively be by one or more luminescent or laser diodes.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712147842 DE2147842B2 (en) | 1971-09-24 | 1971-09-24 | Optical repeater integrated in a fiber optic cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1407227A true GB1407227A (en) | 1975-09-24 |
Family
ID=5820519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4330672A Expired GB1407227A (en) | 1971-09-24 | 1972-09-19 | Repeater amplifiers for telecommunications transmission systems |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS576715B2 (en) |
| BE (1) | BE789175A (en) |
| CA (1) | CA995798A (en) |
| CH (1) | CH547019A (en) |
| DE (1) | DE2147842B2 (en) |
| FR (1) | FR2153317B1 (en) |
| GB (1) | GB1407227A (en) |
| IT (1) | IT967733B (en) |
| LU (1) | LU66145A1 (en) |
| SE (1) | SE379121B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2248370C2 (en) * | 1972-10-03 | 1986-05-07 | Siemens AG, 1000 Berlin und 8000 München | Repeater integrated in an optical waveguide of an optical communications system |
| JPS5555594A (en) * | 1978-10-19 | 1980-04-23 | Kokusai Denshin Denwa Co Ltd <Kdd> | Semiconductor light amplifier |
| FR2441860A1 (en) * | 1978-11-14 | 1980-06-13 | Thomson Csf | Optical coupler for fibre optics - grips fibres side by side facing convex mirror coupler to provide simple and small coupler |
| JPS56165437A (en) * | 1980-05-26 | 1981-12-19 | Kokusai Denshin Denwa Co Ltd <Kdd> | Optical repeating system for optical communication |
| US4369524A (en) * | 1980-10-14 | 1983-01-18 | Xerox Corporation | Single component transceiver device for linear fiber optical network |
| JPH01289287A (en) * | 1988-05-17 | 1989-11-21 | Kokusai Denshin Denwa Co Ltd <Kdd> | Semiconductor optical amplification element |
-
0
- BE BE789175D patent/BE789175A/en not_active IP Right Cessation
-
1971
- 1971-09-24 DE DE19712147842 patent/DE2147842B2/en not_active Ceased
-
1972
- 1972-06-08 CH CH547019D patent/CH547019A/en not_active IP Right Cessation
- 1972-07-19 SE SE948472A patent/SE379121B/xx unknown
- 1972-09-07 CA CA151,138A patent/CA995798A/en not_active Expired
- 1972-09-19 GB GB4330672A patent/GB1407227A/en not_active Expired
- 1972-09-20 FR FR7233241A patent/FR2153317B1/fr not_active Expired
- 1972-09-22 LU LU66145D patent/LU66145A1/xx unknown
- 1972-09-22 JP JP9562372A patent/JPS576715B2/ja not_active Expired
- 1972-09-22 IT IT2951372A patent/IT967733B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| CA995798A (en) | 1976-08-24 |
| FR2153317A1 (en) | 1973-05-04 |
| SE379121B (en) | 1975-09-22 |
| CH547019A (en) | 1974-03-15 |
| DE2147842A1 (en) | 1973-04-05 |
| DE2147842B2 (en) | 1980-01-17 |
| JPS576715B2 (en) | 1982-02-06 |
| IT967733B (en) | 1974-03-11 |
| LU66145A1 (en) | 1973-01-17 |
| JPS4842750A (en) | 1973-06-21 |
| FR2153317B1 (en) | 1978-10-20 |
| BE789175A (en) | 1973-01-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |