CN2503502Y - Photoswitch - Google Patents
Photoswitch Download PDFInfo
- Publication number
- CN2503502Y CN2503502Y CN 01215331 CN01215331U CN2503502Y CN 2503502 Y CN2503502 Y CN 2503502Y CN 01215331 CN01215331 CN 01215331 CN 01215331 U CN01215331 U CN 01215331U CN 2503502 Y CN2503502 Y CN 2503502Y
- Authority
- CN
- China
- Prior art keywords
- output terminal
- photoswitch
- ceramic body
- piezoelectric ceramic
- printing opacity
- 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
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- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The utility model relates to an optical switch, which comprises an input terminal, a first output terminal, a second output terminal and an optical path converting device. The optical path converting device comprises a piezoelectric ceramic body, a transmission crystal and a reflecting filming, wherein one end of the transmission crystal is fixed on the piezoelectric ceramic body, and the reflecting filming is arranged on the transmission crystal. The piezoelectric ceramic body is distorted through impressing external voltage, and the optical signal input from the original input terminal can be changed to be output by the first output terminal from the original second output terminal.
Description
The utility model photoswitch makes piezoelectric ceramic body produce distortion by applying external voltage, thereby changes the photoswitch of light signal travel path.
Optical fiber provides effective transmission path for optical signal transmission, and for obtaining desired optical signal transmission path, the conversion of light signal between different fiber is very necessary in integrated optical circuit or optical-fiber network.Typical photoswitch has one or more light input ends and plural at least light output end, is used for the mutual conversion or the logical operation of the light signal of integrated optical circuit or optical-fiber network.
According to its principle of work, photoswitch can be divided into mechanical type and on-mechanical formula two big classes.Mechanical optical switch moves by optical fiber or optical module, and light path is changed.Problems such as the weak point that this photoswitch exists at present is that switching time is longer, and the general on-off effect time is tens of milliseconds, and the also existence that has rebound shake and repeatability are relatively poor.
Moving fiber formula photoswitch, its end that inputs or outputs in the end is fixing, the other end can move, and realizes the switching of light path by mobile free fiber.Its shortcoming is: input optical fibre needs accurately to aim at output optical fibre on the one hand, avoids extra added losses, and this high-precision requirement increases its manufacturing cost and complicacy; The optical fiber of unprotect device is easily lost when mobile on the other hand, and the protective device of optical fiber reduces the optical fiber pliability.
The utility model purpose is to be to provide a kind of switch speed very fast, and loss is little, the better simply photoswitch of processing procedure.
The utility model photoswitch, it comprises input end, first output terminal, second output terminal and optical path switching device.This optical path switching device comprises piezoelectric ceramic body, printing opacity crystal and reflection plated film, and wherein this printing opacity crystal one end is fixed in this piezoelectric ceramic body, and this reflection plated film is arranged on this printing opacity crystal.Make piezoelectric ceramic body produce the light signal that distortion makes former input end input by applying external voltage, can change the output of first output terminal into by second output terminal.
The utility model photoswitch makes piezoelectric ceramic body produce distortion by applying external voltage, thereby changes the photoswitch of light signal travel path.The slewing rate of this photoswitch depends primarily on the responsiveness of piezoelectric ceramic body, generally can reach more than the 1kHz/s, and switch speed is very fast, and loss is less, and processing procedure is simpler.
Below in conjunction with embodiment and accompanying drawing the utility model is further described.
Fig. 1 is the diagrammatic cross-section of the utility model photoswitch during not to the piezoelectric ceramic body making alive.
Fig. 2 is the diagrammatic cross-section of the utility model photoswitch during to the piezoelectric ceramic body making alive.
See also Figure 1 and Figure 2, the utility model photoswitch comprises: first collimating apparatus, 10, the second collimating apparatuss 20, optical path switching device 50 and housing 40.Wherein the input end 1 and first output terminal 2 are respectively an optical fiber and are contained in first collimating apparatus 10.Second output terminal 3 also is an optical fiber, and 3 of second output terminals are to be contained in second collimating apparatus 20.
Optical path switching device 50 comprises piezoelectric ceramic body 30, printing opacity crystal 51 and reflection plated film 52, wherein printing opacity crystal 51 one ends are fixed in piezoelectric ceramic body 30, reflection plated film 52 is arranged at part printing opacity crystal 51 surface, and piezoelectric ceramic body 30 then is fixed in the housing 40 with respect to the other end of printing opacity crystal 51.Piezoelectric ceramic body 30 is a drive unit, produces distortion under the impressed voltage effect, moves thereby promote printing opacity crystal 51.Reflection plated film 52 is to plate 1 μ m thick silver or other high reflecting material approximately at printing opacity crystal 51 part surface earlier; on silver-plated or other high reflecting material, add the high reflecting material of plating multilayer then; obtain high reflecting material plated film, at last protective film coating gained again on the high reflecting material plated film of multilayer.
As shown in Figure 1, when piezoelectric ceramic body 30 of the present utility model not during making alive, the light signal of input end 1 input enters first collimating apparatus 10, by 3 outputs of second output terminal.When to piezoelectric ceramics 30 making alives, as shown in Figure 2, piezoelectric ceramic body produces distortion and pushes printing opacity crystal 51 to below, and the light signal of input end 1 input projects on the reflection plated film 52, and beam reflection enters second collimating apparatus 20, by 2 outputs of first output terminal.When piezoelectric ceramic body 30 stopped making alive, piezoelectric ceramic body 30 shrank and makes printing opacity crystal 51 resile.
Can select to be transformed between first output terminal 2 and second output terminal 3 with the output of reaching light signal by the way.
Claims (7)
1. a photoswitch comprises input end, first output terminal, second output terminal and optical path switching device, this optical path switching device comprises drive unit, printing opacity crystal and reflection plated film, it is characterized in that: this printing opacity crystal one end is fixed in this drive unit, and this reflection plated film is arranged on this printing opacity crystal; Promote this printing opacity crystal by this drive unit and move the light signal that makes former input end input, can select from first output terminal or the output of second output terminal.
2. photoswitch as claimed in claim 1 is characterized in that: this drive unit is a piezoelectric ceramic body, makes this piezoelectric ceramic body produce distortion by applying external voltage, makes the light signal from former input end input, can change the output of first output terminal into by second output terminal.
3. photoswitch as claimed in claim 2 is characterized in that: this printing opacity crystal can move with the flexible of piezoelectric ceramic body.
4. photoswitch as claimed in claim 1 is characterized in that: it comprises first collimating apparatus, second collimating apparatus, and this input end and this first output terminal are to be contained in this first collimating apparatus, and this second output terminal is to be contained in this second collimating apparatus.
5. photoswitch as claimed in claim 1 is characterized in that: this input end and this first output terminal are respectively an optical fiber, and this second output terminal also is an optical fiber.
6. photoswitch as claimed in claim 1 is characterized in that: this reflection plated film is arranged at the part surface of this printing opacity crystal.
7. photoswitch as claimed in claim 1, it is characterized in that: it comprises housing, this drive unit is fixed in this housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01215331 CN2503502Y (en) | 2001-02-21 | 2001-02-21 | Photoswitch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01215331 CN2503502Y (en) | 2001-02-21 | 2001-02-21 | Photoswitch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2503502Y true CN2503502Y (en) | 2002-07-31 |
Family
ID=33633929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01215331 Expired - Fee Related CN2503502Y (en) | 2001-02-21 | 2001-02-21 | Photoswitch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2503502Y (en) |
-
2001
- 2001-02-21 CN CN 01215331 patent/CN2503502Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |