JPS57168231A - Thin-film optical multiplexer - Google Patents
Thin-film optical multiplexerInfo
- Publication number
- JPS57168231A JPS57168231A JP5351181A JP5351181A JPS57168231A JP S57168231 A JPS57168231 A JP S57168231A JP 5351181 A JP5351181 A JP 5351181A JP 5351181 A JP5351181 A JP 5351181A JP S57168231 A JPS57168231 A JP S57168231A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- light
- outputted
- optical fiber
- circuit
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/11—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on acousto-optical elements, e.g. using variable diffraction by sound or like mechanical waves
- G02F1/125—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on acousto-optical elements, e.g. using variable diffraction by sound or like mechanical waves in an optical waveguide structure
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
PURPOSE:To transmit a command signal, a start signal, and a data signal through one optical fiber by performing Bragg diffraction selectively betweeen waveguide light beams and a surface acoustic wave, and then adding a start light signal to diffracted light selectively. CONSTITUTION:When a central processor 36 outputs command signal light having a driving frequency fm, etc., to an optical fiber 38, a drive controlling circuit 3 applies a voltage to an electrode 33 on a branch path 31 all the time except when a comb-shaped electrode ultrasonic oscillator 27 is driven and when a start signal is outputted. Therefore, the command signal light is branched by the 31, converted photoelectrically by a photodetecting element 34, and outputted to a drive controlling circuit 39. Before driving the oscillator 27, the drive controlling circuit 39 outputs the start signal to a semiconductor laser 35 and, at the same time, applies a voltage to the electrode 33 on a waveguide 30, and the start signal is outputted to the central processor 36 through an optical fiber 38. Then, the circuit 39 oscillates the oscillator 27 at the frequency fm and the (m)th signal light is inputted to the circuit 39.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5351181A JPS57168231A (en) | 1981-04-09 | 1981-04-09 | Thin-film optical multiplexer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5351181A JPS57168231A (en) | 1981-04-09 | 1981-04-09 | Thin-film optical multiplexer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57168231A true JPS57168231A (en) | 1982-10-16 |
Family
ID=12944835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5351181A Pending JPS57168231A (en) | 1981-04-09 | 1981-04-09 | Thin-film optical multiplexer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57168231A (en) |
-
1981
- 1981-04-09 JP JP5351181A patent/JPS57168231A/en active Pending
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