CN101995611A - Double-optical-fiber three-way optical wave selector - Google Patents
Double-optical-fiber three-way optical wave selector Download PDFInfo
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- CN101995611A CN101995611A CN2009101629876A CN200910162987A CN101995611A CN 101995611 A CN101995611 A CN 101995611A CN 2009101629876 A CN2009101629876 A CN 2009101629876A CN 200910162987 A CN200910162987 A CN 200910162987A CN 101995611 A CN101995611 A CN 101995611A
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Abstract
The invention discloses a double-optical-fiber three-way optical wave selector which comprises two focusing lenses, an optical filter, a laser and a photo electric receiver, wherein the two focusing lenses are connected with the optical fiber, the upper surface and the lower surface of the optical filter are coated with optical filter films, the two focusing lens are placed and arranged in light ray incidence and transmission directions, the optical filter is obliquely arranged between the two focusing lenses, an included angle between the optical filter and the incidence light rays is 45 degrees, the photo electric receiver is arranged on a reflecting light path, and the laser is arranged at the transmission light side symmetrical to the photo electric receiver. The technical scheme of the invention realizes the selection function of optical waves with the specific wave length through the simple optical path arrangement and the specific optical filter structure, and the segmented transmission of optical signals can be realized through the serial connection of a plurality of optical wave selectors. Compared with the traditional optical branching filter, the invention greatly simplifies the optical path arranging mode and reduces the manufacture cost.
Description
Technical field
The invention belongs to the optical communication field, particularly relate to a kind of two fine three-dimensional phototube that in optical-fibre communications, uses, utilize its optical communication signal of realizing different wave length to propagate.
Background technology
Along with development of Communication Technique, utilizing optical fiber to carry out exchanges data and transmitting has become the trend that communication field develops.In light communication system, the light signal that signal is used as carrier wave carries realization high speed, stable being transmitted.Usually utilize the light wave of grating pair different wave length to filter in the light wave transmissions process, autotelic realization specific wavelength light wave passes through.Traditional grating method complex structure, and only be that the light wave that is mixed with a plurality of wavelength is selected, function singleness can not realize the segment transmissions of a certain wavelength lightwave signal.Therefore, at the light wave communication field, need to improve common grating wave splitter device to adapt to the requirement of light wave communication.
Summary of the invention
The objective of the invention is provides a kind of novel two fine three-dimensional light wave selector structure in order to solve existing light wave selector structure complexity, can not to realize the defective of a certain lightwave signal segment transmissions.
Realize that above-mentioned purpose technical scheme of the present invention is, a kind of pair of optical fiber three-dimensional light wave selector switch, comprise two GRIN Lens that are connected with optical fiber, upper and lower surface is coated with the optical filter of filter coating, laser instrument and photelectric receiver, two GRIN Lens are arranged in light incident and transmission direction, optical filter tilts to be placed between two GRIN Lens, and optical filter and incident ray angle are 45 degree, photelectric receiver is placed on the reflected light path, and laser instrument is placed on transmitted light one side with the photelectric receiver symmetry.
Above-mentioned two GRIN Lens are respectively as incident light GRIN Lens and emergent light GRIN Lens, the incident light GRIN Lens is converted to directional light with the light in the optical fiber, and the emergent light GRIN Lens is with the directional light of mating plate transmission and the reflection optical coupler that laser instrument is transmitted on the optical filter are incorporated into Optical Fiber Transmission after filtration.
The filter coating that the optical filter surface is plated is a kind ofly to have the film of selecting the transmission of specific wavelength light wave, and filter coating to the light wave reflectivity of this specific wavelength less than 2%.
Can before laser instrument and photelectric receiver, place lens, be used for that laser instrument is sent the light that receives with photelectric receiver and focus on.
The light wave that laser instrument is launched is can not be by the light wave of filter coating transmission.
Laser instrument used among the present invention can adopt semiconductor laser, and photelectric receiver can be the semi-conductor type photelectric receiver.
Light signal segment transmissions device is formed in a plurality of identical two optical fiber three-dimensional light wave selector switch polyphones backs, realize the segment transmissions of signal specific.
The present invention has realized the selection function of specific wavelength light wave by simple light path arrangement and specific filter sheet structure, and the polyphone that utilizes a plurality of light wave selector switchs can be realized the segment transmissions of light signal, the present invention compares with existing optical branching filter, simplify the light path arrangement mode greatly, reduced cost of manufacture.
Description of drawings
Fig. 1 is an of the present invention pair of optical fiber three-dimensional light wave selector structure synoptic diagram;
Fig. 2 is the schematic diagram that the signal subsection transmission is realized in light wave selector switch polyphone of the present invention back.Among the figure, 1, GRIN Lens; 1-1, optical fiber; 2, optical filter; 3, filter coating; 4, laser instrument; 5, lens; 6, photelectric receiver.
Embodiment
Specifically describe of the present invention below in conjunction with accompanying drawing, as Fig. 1 is of the present invention pair of optical fiber three-dimensional light wave selector structure synoptic diagram, as shown in the figure, structure of the present invention comprises two GRIN Lens 1 that are connected with optical fiber 1-1, upper and lower surface is coated with the optical filter 2 of filter coating 3, laser instrument 4 and photelectric receiver 6, two GRIN Lens are placed along light incident and transmission direction and are arranged, optical filter tilts to be placed between two GRIN Lens, and optical filter and incident light angular separation are 45 degree, photelectric receiver is placed on the reflected light path, and laser instrument is placed on transmitted light one side with the photelectric receiver symmetry.Two GRIN Lens are respectively as incident light GRIN Lens and emergent light GRIN Lens, the incident light GRIN Lens is converted to directional light with the light in the optical fiber and is incident on the optical filter, the emergent light GRIN Lens will be after filtration the directional light of mating plate transmission and reflection optical coupler that laser instrument incides optical filter transmit after being incorporated into optical fiber.Be the reception of the luminous and photelectric receiver that strengthens laser instrument, the focusing of before laser instrument and photelectric receiver, placing lens realization light.The filter coating that the optical filter surface is plated is a kind of film of selecting the transmission of specific wavelength light wave that has, with a kind of the most common selection filter coating is special case, it is that the light wave of 1550nm almost completely sees through to wavelength, and to the light wave reflectivity of this wavelength less than 2%, the wavelength of laser emitting is that the light wave of 1310nm is reflexed to the emergent light GRIN Lens fully by this filter coating, thereby the selection that forms two kinds of wavelength light waves is propagated, laser instrument in the present embodiment adopts semiconductor laser, photelectric receiver is the semi-conductor type photelectric receiver, certainly selects dissimilar laser instrument and photelectric receiver according to practical application.
Fig. 2 is the schematic diagram that the signal subsection transmission is realized in a plurality of polyphones of the present invention back, as shown in the figure along the direction of propagation of light, there is the light of 1310nm and two wavelength of 1550nm propagating in the optical fiber, different is, the light of 1550nm can connect light wave selector switch of the present invention, that is not stopped relays, and the light of 1310nm is segment transmissions.As in first channel-splitting filter, powering up tonal signal B to semiconductor laser, produce 1310nm light and pass to second channel-splitting filter, only received by the photelectric receiver in second channel-splitting filter, restore electric tonal signal B; In like manner, signal C also can realize only propagating in the 3rd photelectric receiver in the channel-splitting filter, and the rest may be inferred can realize that the segmentation of signal propagates.
Technique scheme has only embodied the optimal technical scheme of technical solution of the present invention, those skilled in the art to some part wherein some changes that may make all embodied principle of the present invention, belong within protection scope of the present invention.
Claims (8)
1. two optical fiber three-dimensional light wave selector switch, comprise two GRIN Lens that are connected with optical fiber, upper and lower surface is coated with the optical filter of filter coating, laser instrument and photelectric receiver is characterized in that, two GRIN Lens are arranged in light incident and transmission direction, optical filter tilts to place between two GRIN Lens, and optical filter and incident light angular separation are 45 degree, and photelectric receiver is placed on the reflected light path, and laser instrument is placed on transmitted light one side with the photelectric receiver symmetry.
2. according to claim 1 pair of optical fiber three-dimensional light wave selector switch, it is characterized in that, two GRIN Lens are respectively as incident light GRIN Lens and emergent light GRIN Lens, the incident GRIN Lens is converted to directional light with the light in the optical fiber, and the emergent light GRIN Lens is with the directional light of mating plate transmission and the reflection optical coupler that laser instrument is transmitted on the optical filter are incorporated into Optical Fiber Transmission after filtration.
3. according to claim 1 pair of optical fiber three-dimensional light wave selector switch is characterized in that, the filter coating that the optical filter surface is plated is a kind ofly to have the film of selecting the transmission of specific wavelength light wave, and filter coating to the light wave reflectivity of this specific wavelength less than 2%.
4. according to claim 1 pair of optical fiber three-dimensional light wave selector switch is characterized in that, places lens before laser instrument and the photelectric receiver, is used for that laser instrument is sent the light that receives with photelectric receiver and focuses on.
5. according to claim 1 pair of optical fiber three-dimensional light wave selector switch is characterized in that the light wave that laser instrument is launched is can not be by the light wave of filter coating transmission.
6. according to claim 1 pair of optical fiber three-dimensional light wave selector switch is characterized in that laser instrument can adopt semiconductor laser.
7. according to claim 1 pair of optical fiber three-dimensional light wave selector switch is characterized in that photelectric receiver is the semi-conductor type photelectric receiver.
8. according to claim 1,2,3,4 or 5 described pairs of optical fiber three-dimensional light wave selector switchs, it is characterized in that, will can form a kind of light signal segment transmissions device behind a plurality of identical two optical fiber three-dimensional light wave selector switchs polyphones.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101629876A CN101995611A (en) | 2009-08-21 | 2009-08-21 | Double-optical-fiber three-way optical wave selector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101629876A CN101995611A (en) | 2009-08-21 | 2009-08-21 | Double-optical-fiber three-way optical wave selector |
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| Publication Number | Publication Date |
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| CN101995611A true CN101995611A (en) | 2011-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009101629876A Pending CN101995611A (en) | 2009-08-21 | 2009-08-21 | Double-optical-fiber three-way optical wave selector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525886A (en) * | 2020-12-07 | 2021-03-19 | 上海新产业光电技术有限公司 | Raman spectrum device |
-
2009
- 2009-08-21 CN CN2009101629876A patent/CN101995611A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525886A (en) * | 2020-12-07 | 2021-03-19 | 上海新产业光电技术有限公司 | Raman spectrum device |
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Application publication date: 20110330 |