CN102565970A - Optical fiber concentrator - Google Patents

Abstract

The invention relates to an optical fiber concentrator, which comprises a parent joint, an optical amplifier, a light-dividing device and N son joints, wherein the parent joint is used for receiving a laser source signal of a host; the optical amplifier is used for enhancing the laser source signal of the host, and is provided with an input end and an output end; the input end is optically communicated with the parent joint; the output end is used for outputting an enhanced laser source signal; the light-dividing device is used for dividing the enhanced laser source signal into N beams of son laser source signals; each son joint is used for receiving and outputting a son laser source signal respectively; and N is an integer of more than or equal to 2. According to the optical fiber concentrator, the laser source signal transmitted by the host can be transmitted to different user terminals simultaneously, so that the cost of multi-party communication equipment is reduced.

Description

fiber hub

technical field

The invention relates to an optical fiber hub, in particular to an optical fiber hub capable of simultaneously transmitting laser source signals to multiple user terminals.

Background technique

In the field of modern communication, optical fiber is widely used due to its advantages of fast transmission speed and high transmission efficiency. For example, in multimedia teaching, optical fiber is often used to transmit the laser source signal of the host computer to the multimedia equipment in different classrooms at the same time, so that the trainees can share the teaching video/audio at the same time. For the real-time audio-visual services provided by telecom operators in some hotspots, the optical fiber is usually used to transmit the laser source signal of the host to multiple user terminal devices, so that users in various places can receive audio-visual files in real time. If a single host is used to transmit source signals to a single user terminal device, the above situation undoubtedly requires multiple hosts, resulting in high cost of the host device. In view of this, it is necessary to provide a fiber optic hub that can simultaneously transmit laser source signals to multiple user terminals to save costs.

Contents of the invention

An optical fiber hub includes a female connector, an optical amplifier, an optical splitting device and N sub-connectors. This female connector is used to receive the laser source signal of the host. The optical amplifier is used to enhance the laser source signal of the host, and has an input end and an output end, the input end is in optical communication with the female connector, and the output end is used to output the enhanced laser source signal. The light splitting device is used for splitting the enhanced laser source signal into N beams of sub-laser source signals. The connectors are respectively used to receive and output a sub-laser source signal. N is an integer greater than or equal to 2.

Through the optical fiber hub, the laser source signal emitted by the host can be transmitted to different user terminals at the same time, reducing the cost of multi-party communication equipment.

Description of drawings

FIG. 1 is a schematic diagram of an optical fiber hub provided in a first embodiment of the technical solution.

Fig. 2 is a schematic diagram of an optical fiber hub provided in a second embodiment of the technical solution.

Description of main component symbols

Fiber hub 100, 200

Shell 70, 270

Female connector 10,210

Optical Amplifier 20, 220

Input 21, 221

output terminal 22,222

Spectroscopic device 40, 240

Sub-connector 50, 250

Convex Incidence 511

Exit plane 512

Concentrating device 51,251

Receiving/output terminal 52, 252

Light path expansion device 230

Plane of incidence 231

Exit Convex 232

First beam splitter 241

Second beam splitter 242

The third beam splitter 243

Detailed ways

The optical fiber hub provided by the technical solution will be described in detail below with reference to the drawings and specific embodiments.

Referring to FIG. 1 , the optical fiber hub 100 provided by the first embodiment of the technical solution includes a housing 70 and a female connector 10 , an optical amplifier 20 , an optical splitting device 40 and two sub-connectors 50 integrated in the housing 70 .

The female connector 10 is used for communicating with an upstream host such as a computer, a projector, etc., and receiving a laser source signal provided by the host. The female connector 10 can be a plug or a socket of an optical fiber connector.

The optical amplifier 20 is used to enhance the laser source signal of the host, and can be a fiber amplifier or a Raman optical amplifier. The optical amplifier 20 has an input terminal 21 and an output terminal 22 . The input end 21 communicates optically with the female connector 10 through an optical fiber, and the output end 22 transmits the enhanced laser source signal to the spectroscopic device 40 through the optical fiber, and makes it irradiate the spectroscopic device 40 .

The splitting device 40 is used for splitting the enhanced laser source signal B into two beams of sub-laser source signals. As shown in FIG. 1 , the spectroscopic device 40 includes a semi-transmitting and semi-reflecting spectroscope, wherein a sub-laser source signal B1 is reflected by the spectroscope, and another sub-laser source signal B2 passes through the spectroscope. The two sub-laser source signals are respectively received and output by a sub-joint 50 .

Each sub-junction 50 includes a light collecting device 51 and a receiving/output terminal 52 . The focusing device 51 is used to collect the corresponding sub-laser source signals. Specifically, the light concentrating device 51 has a convex incident surface 511 and an outgoing plane 512 opposite to the convex incident surface 511 . In this way, the sub-laser signal will be converged by the incident convex surface 511 and transmitted from the exit plane 512 to the receiving/output terminal 52 through the optical fiber. The receiving/output terminal 52 is used for receiving and outputting the sub-laser source signal collected by the focusing device 51 , which can be a plug or socket of a fiber optic connector. In addition, the light concentrating device 51 can be a socket or a plug of a fiber optic connector, which is combined with the receiving/output terminal 52 to form a fiber optic connector. Alternatively, the light concentrating device 51 can be any device commonly used in the art with a light concentrating function, such as a biconvex lens, a combination of lenses or a combination of prisms.

In actual use, the plugs of each user terminal equipment that uses optical fiber to transmit data are connected to the receiving/output terminal 52, and then the signals of each sub-laser source will be transmitted to each user terminal equipment, achieving the use of a host computer to transmit the laser source signal Simultaneous transmission to multiple user terminals saves the cost of the host compared with the transmission mode of one host to one user terminal.

Referring to FIG. 2 , the fiber hub 200 provided by the second embodiment of the technical solution includes a housing 270 and a female connector 210 , an optical amplifier 220 , an optical splitting device 240 and four sub-connectors 250 integrated in the housing 270 . The optical amplifier 220 includes an input terminal 221 and an output terminal 222 opposite to the input terminal 221 . Besides, the optical fiber hub 200 also includes an optical path expansion device 230 .

The optical path extension device 230 communicates optically with the output end 222 through an optical fiber, and is used for extending the optical path of the enhanced host laser source signal. Specifically, the optical path expanding device 230 has an incident plane 231 and a convex exit surface 232 opposite to the incident plane 231 . The incident plane 231 is used to receive the enhanced host laser source signal output from the output terminal 222 , and the outgoing convex surface 232 expands the laser source signal. In this way, compared with directly injecting the laser source signal into the spectroscopic device 240 through an optical fiber, the diameter of the optical path of the laser signal of the host is enlarged, which facilitates accurate alignment of the aforementioned components when assembling the optical fiber hub 200 . The optical path expansion device 230 is not limited to this structure, and can be any device with a light expansion function commonly used in the art, such as a biconcave lens, or a combination of a prism and a beam splitter.

The beam splitter 240 includes three semi-transmissive and semi-reflective beam splitters, which are shown as a first beam splitter 241 , a second beam splitter 242 and a third beam splitter 243 . The first beam splitter 241 is opposite to the outgoing convex surface 232, and is used for receiving the laser source signal B after the optical path has been expanded, and splitting it into a first sub-laser source signal B1 and a second sub-laser source signal B2. The first sub-laser source signal B1 is reflected by the first beam splitter 241 to the second beam splitter 242 , and is again split into two sub-laser source signals B3 and B4 by the second beam splitter 242 . The sub-laser source signal B3 passes through the second beam splitter 242 , is received and output by a sub-junction 250 , and the sub-laser source signal B4 is reflected by the second beam splitter 242 , and is received and output by another sub-junction 250 . The second sub-laser source signal B2 passes through the first beam splitter 241 , irradiates to the third beam splitter 243 , and is further split into two sub-laser source signals B5 and B6 by the third beam splitter 243 . The sub-laser source signal B5 is reflected by the third beam splitter 243 to yet another sub-junction 250, and is received and output by the latter. The sub-laser source signal B6 passes through the third beam splitter 243 and is received and output by another sub-connector 250 .

In the optical fiber hub 200 , the number of semi-transmissive and semi-reflective beam splitters included in the optical splitting device 240 is not limited thereto, and can be changed according to the actual required number of sub-connectors. In general, if N sub-connectors are required, and N is an integer greater than 2, then the beam splitting device may include N-1 semi-transmissive and semi-reflective beam splitters. In the assembly process of the fiber optic hub, the first beam splitter of the N-1 beam splitters can be opposite to the output end of the optical amplifier or the exit surface of the optical path expansion device, so as to split the enhanced laser source signal into two beamlet laser source signal. It can be understood that one of the sub-laser source signals is reflected by the first beam splitter to the second beam splitter, and the other beam of sub-laser source signals passes through the first beam splitter and is irradiated to the third beam splitter. The two sub-laser source signals are respectively The second beam splitter and the third beam splitter are divided into two beams of sub-laser source signals again. By analogy, each beam splitter divides the laser source signal it receives into two beams in a semi-transparent and semi-reflective manner, until the enhanced laser source signal is divided into N beams of sub-laser source signals, which are respectively divided into N beams by a The corresponding sub-tap receives and outputs.

It can be understood that those skilled in the art can also make other changes within the spirit of the present invention for the design of the present invention, as long as they do not deviate from the technical effects of the present invention. These changes made according to the spirit of the present invention should be included in the scope of the present invention.

Claims (7)

1. fibre concentrator comprises:

Female joint, this female joint are used to receive main frame lasing light emitter signal;

Image intensifer, this image intensifer are used to strengthen this main frame lasing light emitter signal, and it has input end and output terminal, and this input end and this female joint optical communication, this output terminal are used to export this main frame lasing light emitter signal after the enhancing;

Light-dividing device, this light-dividing device are used for that this main frame lasing light emitter signal after strengthening is divided into N and restraint sub-lasing light emitter signal; With

N sub-joint, each sub-joint is respectively applied for reception and exports a sub-lasing light emitter signal, and N is the integer more than or equal to 2.

2. fibre concentrator as claimed in claim 1 is characterized in that, this female joint and this image intensifer carry out optical communication through optical fiber.

3. fibre concentrator as claimed in claim 1; It is characterized in that; Each sub-joint comprises a beam condensing unit and a reception/lead-out terminal; This beam condensing unit is used to collect corresponding with it sub-lasing light emitter signal, and this reception/lead-out terminal and this beam condensing unit carry out optical communication through optical fiber, and is used to export the sub-lasing light emitter signal that this beam condensing unit is collected.

4. fibre concentrator as claimed in claim 1 is characterized in that this fibre concentrator also comprises housing, and this female joint, this image intensifer, this light-dividing device and this N sub-joint is integrated in this housing.

5. like each described fibre concentrator of claim 1 to 4; It is characterized in that; This fibre concentrator also comprises the optical path expanding unit; This optical path expanding unit and this output terminal optical communication are used to expand the optical path of this main frame lasing light emitter signal after the enhancing, and this main frame lasing light emitter signal is transferred to this light-dividing device.

6. fibre concentrator as claimed in claim 5; It is characterized in that N equals 2, this light-dividing device comprises a semi-penetration, semi-reflective spectroscope; This spectroscope and this output terminal or this optical path expanding unit are relative; This main frame lasing light emitter signal after being used for strengthening is divided into the sub-lasing light emitter signal of two bundles, and wherein a branch of sub-lasing light emitter signal is by this spectroscope reflection, and another is restrainted sub-lasing light emitter signal and penetrates this spectroscope.

7. fibre concentrator as claimed in claim 5; It is characterized in that; This light-dividing device comprises N-1 semi-penetration, semi-reflective spectroscope; N is the integer greater than 2, and first spectroscope of this N-1 spectroscope and this output terminal or this optical path expanding unit are relative, is used for this main frame lasing light emitter signal after strengthening is divided into the sub-lasing light emitter signal of two bundles; Wherein a branch of sub-lasing light emitter signal is reflexed to second spectroscope by this first spectroscope; Another is restrainted and exposes to the 3rd spectroscope after sub-lasing light emitter signal penetrates this first spectroscope, and the sub-lasing light emitter signal of this two bundle is divided into the sub-lasing light emitter signal of two bundles by this second spectroscope and the 3rd spectroscope respectively again, so analogizes; Sub-lasing light emitter signal that each spectroscope all will expose to its surface is divided into two bundles with the mode of semi-penetration semi-reflective, and this main frame lasing light emitter signal after strengthening is divided into N and restraints sub-lasing light emitter signal.

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