CN2209341Y - Multifunctional small low-voltage electro-optic switch - Google Patents
Multifunctional small low-voltage electro-optic switch Download PDFInfo
- Publication number
- CN2209341Y CN2209341Y CN 94239426 CN94239426U CN2209341Y CN 2209341 Y CN2209341 Y CN 2209341Y CN 94239426 CN94239426 CN 94239426 CN 94239426 U CN94239426 U CN 94239426U CN 2209341 Y CN2209341 Y CN 2209341Y
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- lithium columbate
- model
- utility
- eyeglass
- voltage
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- Expired - Fee Related
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Abstract
The utility model relates to a multifunctional small low-voltage electro-optic switch, comprising a shell body, a lithium niobate crystal prism and membrane electrodes. The utility model is characterized in that the lithium niobate crystal prism is composed of two lithium niobate crystal lenses; a plurality of membrance layers are arranged between the lithium niobate crystal lenses; the lenses are trapezoidal; the thickness of each of the lenses is 0.4-2 mm; the two planes of the lenses are respectively provided with membrane electrodes. The utility model has the advantages of small size, low-voltage driving, high switching rate, convenient use, etc. The switching rate can reach 1 G Hz; switching voltage is 75-100V. The multifunctional small low-voltage electro-optic switch can be used as photoswitch, and can also be used as a beam splitter or a modulator.
Description
The utility model relates to a kind of multifunction micro low tension-photoswitch that can be used for optical fiber communication and optic testing system.
The electrical-optical switch is widely used in laser technology, comprises technology such as transferring Q, frequency multiplication, also is applied to optical fiber communication and general optic test.The present electrical-optical switch that uses, its shortcoming is: volume is big, is about 10 * 10 * 20 cubic millimeters; Driving voltage is up to the 1000-2000 volt; Switching rate is low, and result of use is very undesirable.
The purpose of this utility model provides a kind of multifunctional low-voltage electrical-optical switch.
Task of the present utility model is to realize like this.The electrical-optical switch comprises housing, lithium columbate crystal prism, membrane electrode, it is characterized in that: described lithium columbate crystal prism is made up of two opposite lithium columbate crystal eyeglasses in crystal orientation, and multilayer film is arranged therebetween, eyeglass be shaped as ladder type, thickness is 0.4～2 millimeter, on its side membrane electrode is arranged.Above structural design is based on the formula of the electro-optical device electric light phase delay relevant with electric field, promptly increases light path and reduce interelectrode distance to reduce driving voltage.The utility model adopts multilayer film that the light beam beam split is reflected with the increase light path, and reduces driving voltage by attenuate crystal eyeglass to reduce two interelectrode distances.
Now the utility model is described in further detail in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the utility model electrooptical switching.
Fig. 2 is the structural representation of the utility model lithium columbate crystal prism.
1-housing among the figure, 2-lithium columbate crystal prism, 3,4-membrane electrode and lead, 5,6-lithium columbate crystal eyeglass, 7-multilayer film, 8-anti-reflection film, arrow indication optical path direction among the figure.
The utility model comprises housing 1, lithium columbate crystal prism 2, membrane electrode 3,4, it is characterized in that: described lithium columbate crystal prism is made up of two opposite lithium columbate crystal eyeglasses 5,6 in crystal orientation, multilayer film 7 is arranged therebetween, eyeglass 5,6 be shaped as ladder type, membrane electrode 3,4 is arranged respectively on its two plane, on the plane of incidence of eyeglass 5,6 and exit facet, anti-reflection film 8 is arranged.On housing 1, also have unthreaded hole, can directly connect with optical fiber by GRIN Lens.
Principle of work of the present utility model is such: light beam is injected lithium columbate crystal eyeglass 5, part light transmission multilayer film 7 enters lithium columbate crystal eyeglass 6, part reflected back eyeglass 5, two-beam is intersected in multilayer film 7 through after the total reflection, penetrate eyeglass 5,6 after interfering respectively, according to the electro-optical characteristic of lithium columbate crystal, change on two eyeglasses added electric field and can control the output light intensity.The utility model has increased light path owing to having adopted the multilayer film reflection and two opposite lithium niobate eyeglass 5,6 combinations in crystal orientation being made technology such as electrooptical effect stack, has reduced volume, has reduced driving voltage and electrode capacitance, and has improved switching rate; Get final product modulated light signal as on electrode, adding modulation voltage, play the effect of modulator; In addition can be as the beam splitter of different wave length light beam.
The thickness of lithium columbate crystal prism described in the utility model is generally the 0.4-2 millimeter, and as an embodiment, prism thickness adopts 0.6 millimeter, is shaped as ladder type, and prism angle is 29.5 °, and length is 15 millimeters, and width is 12 millimeters; Multilayer film adopts the titanium silicon fiml, and printing opacity and reflectance are 1:1, also can change its ratio as required; Membrane electrode is a metal electrode, and its material can be aluminium, gold, copper.
The utlity model has that volume is little, low-voltage driving, switching rate height, advantage such as easy to use, its switching rate can reach the 1G hertz, switching voltage is the 75-100 volt, not only can be used as photoswitch, can also be used as beam splitter or modulator.
Claims (4)
1, a kind of multifunction micro low tension-photoswitch, comprise housing (1), lithium columbate crystal prism (2), membrane electrode (3) (4), it is characterized in that: the lithium columbate crystal eyeglass (5) (6) of described lithium columbate crystal prism (2) is formed, multilayer film (7) is arranged therebetween, eyeglass (5) (6) be shaped as ladder type, thickness is 0.4～2 millimeter, and membrane electrode (3) (4) is arranged respectively on its plane.
2, electrooptical switching according to claim 1 is characterized in that: described lithium columbate crystal eyeglass (5) (6) crystal orientation is opposite.
3, electrooptical switching according to claim 1 and 2 is characterized in that: described multilayer film (7) is the titanium silicon fiml.
4, electrooptical switching according to claim 3 is characterized in that: described lithium columbate crystal eyeglass (5) (6) prism angle is 29.5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94239426 CN2209341Y (en) | 1994-09-30 | 1994-09-30 | Multifunctional small low-voltage electro-optic switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94239426 CN2209341Y (en) | 1994-09-30 | 1994-09-30 | Multifunctional small low-voltage electro-optic switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2209341Y true CN2209341Y (en) | 1995-10-04 |
Family
ID=33846647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94239426 Expired - Fee Related CN2209341Y (en) | 1994-09-30 | 1994-09-30 | Multifunctional small low-voltage electro-optic switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2209341Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8229257B2 (en) | 2005-12-14 | 2012-07-24 | Koninklijke Philips Electronics N.V. | Light-emitting device |
-
1994
- 1994-09-30 CN CN 94239426 patent/CN2209341Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8229257B2 (en) | 2005-12-14 | 2012-07-24 | Koninklijke Philips Electronics N.V. | Light-emitting device |
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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 |