CN111552013A - Optical splitter and single-fiber bidirectional optical transceiving component - Google Patents
Optical splitter and single-fiber bidirectional optical transceiving component Download PDFInfo
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- CN111552013A CN111552013A CN202010386775.2A CN202010386775A CN111552013A CN 111552013 A CN111552013 A CN 111552013A CN 202010386775 A CN202010386775 A CN 202010386775A CN 111552013 A CN111552013 A CN 111552013A
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- optical
- optical splitter
- splitter
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- light
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention relates to a light splitter and a single-fiber bidirectional optical transceiving component. The invention aims to provide an optical splitter and a single-fiber bidirectional optical transceiving component. The technical scheme of the invention is as follows: a beam splitter, characterized by: the optical splitter is provided with an optical splitter main body, the middle part of the optical splitter main body is provided with a light transmission module which can emit an optical signal emitted into the back surface of the optical splitter main body from the front surface of the optical splitter main body, and the front surface of the optical splitter main body and the periphery of the light transmission module are provided with reflection films which can reflect the optical signal. The invention is applicable to the technical field of optical communication.
Description
Technical Field
The invention relates to a light splitter and a single-fiber bidirectional optical transceiving component. The method is suitable for the technical field of optical communication.
Background
A Bi-directional optical Sub-assembly (BOSA for short) is a photoelectric conversion device integrating transmission and reception, can realize the function of bidirectional transmission of data in a single optical fiber, and is a vital device in an optical communication system.
In order to perform single fiber receiving and transmitting functions, BOSA generally includes a laser, a detector, a filter, a fiber connector, and the like. The laser emits optical signals to enter the optical fiber in the optical fiber connector through the optical filter; the external light enters the single-fiber bidirectional optical transceiver through the optical fiber and enters the detector through the reflection of the optical filter.
At present, common filters comprise a semi-transparent semi-reflective thin film filter and a WDM filter, but the semi-transparent semi-reflective thin film filter is difficult to manufacture, and the wavelengths of the filters are related and not universal; the WDM filter can not construct a single-fiber bidirectional optical transceiver module with the same and similar wave band.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in view of the above problems, an optical splitter and a single-fiber bidirectional optical transceiver module are provided.
The technical scheme adopted by the invention is as follows: a beam splitter, characterized by: the optical splitter is provided with an optical splitter main body, the middle part of the optical splitter main body is provided with a light transmission module which can emit an optical signal emitted into the back surface of the optical splitter main body from the front surface of the optical splitter main body, and the front surface of the optical splitter main body and the periphery of the light transmission module are provided with reflection films which can reflect the optical signal.
The light transmission module is provided with a light transmission hole which is communicated with the front surface and the back surface of the optical splitter main body.
The light hole can be a hollowed splitter body or a transparent medium connected with the splitter body into a whole.
And the front surface and/or the back surface of the transparent medium are/is provided with an antireflection film.
And a circle of wedge-shaped angle is formed on the splitter main body along the edge of the light hole.
The main body of the optical splitter is made of metal, silicon wafers, plastics, ceramics or organic matters.
The light holes are round, oval, square or star-shaped.
The reflecting film is a metal film or a dielectric film.
The main body of the light splitter is of a sheet structure.
A single-fiber bidirectional optical transceiver module, comprising: the device comprises a laser, a lens I, a lens II, a detector, an optical fiber and the optical splitter;
light signals emitted by the laser device are converged by the lens I and then enter the optical fiber after passing through the light-transmitting module on the optical splitter from the back of the optical splitter; the single-fiber bidirectional optical transceiver is characterized in that external light enters the single-fiber bidirectional optical transceiver through an optical fiber, is reflected by the front face of the optical splitter and a reflection film around the light transmission module after being emitted from the optical fiber, and then is converged by the lens II to enter the detector.
The invention has the beneficial effects that: the invention utilizes the light transmission module on the light splitter to match with the reflective film on the surface to realize the structure of the single-fiber bidirectional light receiving and transmitting assembly which reflects and transmits light and semi-transmits the light, the light transmission module can select the light transmission hole preferentially, the small hole is simple to manufacture and easy to integrate, the transmission and reflection are independent of the wavelength of the optical signal, and the wavelength is the same as or similar to the wavelength of the optical signal, so that the light can be split at 45 degrees at any time. The invention has the advantages of simplicity, compactness, more reasonable structure and convenient use, and can greatly reduce the manufacturing cost of the BOSA.
Drawings
Fig. 1 is a schematic structural view of embodiment 1.
Fig. 2 is a schematic side view of the optical splitter in example 1.
Fig. 3 is a schematic front view of the optical splitter in embodiment 1.
Fig. 4 is a schematic side view of the optical splitter in example 2.
Fig. 5 is a schematic front view of the optical splitter in embodiment 2.
Fig. 6 is a schematic front view of the optical splitter in embodiment 3.
Fig. 7 is a schematic side view of the optical splitter in example 4.
Fig. 8 is a schematic front view of the beam splitter in embodiment 4.
1. A laser; 2. a lens I; 3. a light splitter; 301. a splitter body; 302. a light-transmitting hole; 303. a wedge angle; 304. a reflective film; 305. a transparent medium; 306. an anti-reflection film; 4. a lens II; 5. a detector; 6. an optical fiber.
Detailed Description
Example 1: the embodiment is a single-optical-fiber bidirectional optical transceiver module, which comprises a laser, a lens I, a beam splitter, a lens II, a detector and an optical fiber.
The spectrometer of this example has a sheet-like spectrometer body, the center of which has a circular light hole (through hole) that penetrates the front and back of the spectrometer body, and the region other than the light hole on the front of the spectrometer body is coated with a reflective film.
In the embodiment, the main body of the optical splitter is made of metal, silicon wafers, plastics, ceramics, organic matters or other materials; the reflecting film is realized by a metal film (gold or silver) or a dielectric film.
In the embodiment, a lens I, a beam splitter and an optical fiber are sequentially arranged along a signal path of a light signal emitted by a laser, an included angle of 45 degrees is formed between the beam splitter and the signal path of the light signal emitted by the laser, and a front reflection film of the beam splitter is positioned close to the optical fiber side; in this example, the detector is positioned to receive the optical signal emitted by the optical fiber reflected by the reflecting film on the optical splitter, and a lens II is arranged between the detector and the optical splitter.
In the embodiment, an optical signal emitted by the laser device is converged by the lens I and then enters the optical fiber after penetrating through the light hole on the optical splitter from the back of the optical splitter; the single-fiber bidirectional optical transceiver is characterized in that external light enters the single-fiber bidirectional optical transceiver through an optical fiber, is reflected by a reflecting film on the front face of the optical splitter and around the light hole after being emitted from the optical fiber, and then is converged by the lens II to enter the detector.
Example 2: the present embodiment is substantially the same as embodiment 1, except that a wedge-shaped angle is formed on the splitter body along the edge of the light-transmitting hole in the present embodiment to optimize the transmittance of the transmitted light and the stray light.
Example 3: this embodiment is substantially the same as embodiment 1, except that the light-transmitting holes of the splitter body in this embodiment are oval, but can be made into square, star or other shapes.
Example 4: this embodiment is substantially the same as embodiment 1, except that in this embodiment, a transparent medium (glass, resin, etc.) is filled in the light transmission holes of the optical splitter, the transparent medium is integrally connected with the optical splitter main body, and both the front and back surfaces of the transparent medium are coated with antireflection films.
Example 5: the embodiment is a single-optical-fiber bidirectional optical transceiver module, which comprises a laser, a lens I, a beam splitter, a lens II, a detector and an optical fiber.
The spectrometer comprises a sheet-shaped spectrometer body, the spectrometer body is made of transparent media (glass, resin and the like), the front surface of the spectrometer body is plated with a reflecting film (realized by adopting a metal film (gold or silver) or a dielectric film), a hole-shaped area is reserved in the middle of the front surface of the spectrometer body by the reflecting film, no film is coated in the hole-shaped area, and the hole-shaped area is combined with the transparent media of the spectrometer body to form a light hole capable of emitting an optical signal emitted to the back surface of the spectrometer body from the front surface of the spectrometer body. Antireflection films are plated on the front surface and the back surface of the light splitter main body corresponding to the positions of the light holes.
In the embodiment, a lens I, a beam splitter and an optical fiber are sequentially arranged along a signal path of a light signal emitted by a laser, an included angle of 45 degrees is formed between the beam splitter and the signal path of the light signal emitted by the laser, and a front reflection film of the beam splitter is positioned close to the optical fiber side; in this example, the detector is positioned to receive the optical signal emitted by the optical fiber reflected by the reflecting film on the optical splitter, and a lens II is arranged between the detector and the optical splitter.
In the embodiment, an optical signal emitted by the laser device is converged by the lens I and then enters the optical fiber after penetrating through the light hole on the optical splitter from the back of the optical splitter; the single-fiber bidirectional optical transceiver is characterized in that external light enters the single-fiber bidirectional optical transceiver through an optical fiber, is reflected by a reflecting film on the front face of the optical splitter and around the light hole after being emitted from the optical fiber, and then is converged by the lens II to enter the detector.
Claims (10)
1. A beam splitter, characterized by: the optical splitter is provided with an optical splitter main body, the middle part of the optical splitter main body is provided with a light transmission module which can emit an optical signal emitted into the back surface of the optical splitter main body from the front surface of the optical splitter main body, and the front surface of the optical splitter main body and the periphery of the light transmission module are provided with reflection films which can reflect the optical signal.
2. The optical splitter of claim 1, wherein: the light transmission module is provided with a light transmission hole which is communicated with the front surface and the back surface of the optical splitter main body.
3. The optical splitter of claim 2, wherein: the light-transmitting hole can be internally provided with a transparent medium which is connected with the optical splitter main body into a whole; the light hole can also be a hollow part of the main body of the light splitter.
4. The optical splitter of claim 3, wherein: and the front surface and/or the back surface of the transparent medium are/is provided with an antireflection film.
5. The optical splitter of claim 2, wherein: and a circle of wedge-shaped angle is formed on the splitter main body along the edge of the light hole.
6. The optical splitter of claim 1, wherein: the main body of the optical splitter is made of metal, silicon wafers, plastics, ceramics or organic matters.
7. The optical splitter of claim 1, wherein: the light holes are round, oval, square or star-shaped.
8. The optical splitter of claim 1, wherein: the reflecting film is a metal film or a dielectric film.
9. The optical splitter of claim 1, wherein: the main body of the light splitter is of a sheet structure.
10. A single-fiber bidirectional optical transceiver module, comprising: the optical splitter comprises a laser, a lens I, a lens II, a detector, an optical fiber and the optical splitter of any one of claims 1-9;
light signals emitted by the laser device are converged by the lens I and then enter the optical fiber after passing through the light-transmitting module on the optical splitter from the back of the optical splitter; the single-fiber bidirectional optical transceiver is characterized in that external light enters the single-fiber bidirectional optical transceiver through an optical fiber, is reflected by the front face of the optical splitter and a reflection film around the light transmission module after being emitted from the optical fiber, and then is converged by the lens II to enter the detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010386775.2A CN111552013A (en) | 2020-05-09 | 2020-05-09 | Optical splitter and single-fiber bidirectional optical transceiving component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010386775.2A CN111552013A (en) | 2020-05-09 | 2020-05-09 | Optical splitter and single-fiber bidirectional optical transceiving component |
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| CN111552013A true CN111552013A (en) | 2020-08-18 |
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| CN202010386775.2A Pending CN111552013A (en) | 2020-05-09 | 2020-05-09 | Optical splitter and single-fiber bidirectional optical transceiving component |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112332923A (en) * | 2020-11-26 | 2021-02-05 | 什邡凯业科技有限公司 | Miniaturized short-distance wireless optical transmission assembly |
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2020
- 2020-05-09 CN CN202010386775.2A patent/CN111552013A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112332923A (en) * | 2020-11-26 | 2021-02-05 | 什邡凯业科技有限公司 | Miniaturized short-distance wireless optical transmission assembly |
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