CN102594460A

CN102594460A - Deflection-type LED (light-emitting diode) optical communication transceiver

Info

Publication number: CN102594460A
Application number: CN201210042739XA
Authority: CN
Inventors: 郭丰亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-02-24
Filing date: 2012-02-24
Publication date: 2012-07-18

Abstract

The invention discloses a deflection-type LED (light-emitting diode) optical communication transceiver, and belongs to the technical field of LED optical communication. The transceiver comprises an optical transmitter and an optical receiver, wherein the optical transmitter and the optical receiver are arranged on one LED chip, and the LED chip is in a deflection-type structure, one end of the LED chip is the optical transmitter, and the other end of the LED chip is the optical receiver, the optical transmitter is used for driving an LED to transmit a modulated optical signal with a response rate after an input electrical signal with a certain rate is processed by a drive chip in the optical transmitter, so that a received electrical signal is converted into an optical signal; and the optical receiver is used for converting an optical signal with a certain rate into an electrical signal by a photoelectric detector, and then transmitting the electrical signal to a computer and a network system. Through the mode, the transceiver disclosed by the invention can facilitate a situation that the transceiver is compatible with other digital equipment, and is easier to form a three-dimensional optical-wave network.

Description

A kind of gauche form LED optical communication transceiver

Technical field

The present invention relates to LED optical communication technique field, particularly relate to a kind of gauche form LED optical communication transceiver.

Background technology

Present optical communication equipment all is to comprise reflector and receiver; Reflector is used for that the signal of telecommunication of a constant bit rate of input is handled rear drive LED through the chip for driving of inside and launches the modulated light signal of the speed of response; Make the signal of telecommunication that receives transfer light signal to; Receiver is used for optical signals photodetector with a constant bit rate and changes into the signal of telecommunication and be transferred to computer and network system; But existing transceiver all is to carry out work separately, and inconvenience is compatible with other digital devices, and is difficult for forming three-dimensional lightwave network.

Summary of the invention

The technical problem that the present invention mainly solves provides a kind of gauche form LED optical communication transceiver, can be convenient to and other digital device compatibilities, and form three-dimensional lightwave network more easily.

For solving the problems of the technologies described above; The technical scheme that the present invention adopts is: a kind of gauche form LED optical communication transceiver is provided, and comprising: optical transmitting set and optical receiver is characterized in that; Said optical transmitting set and receiver are made on the same led chip; And said led chip is the gauche form structure, and an end is an optical transmitting set, and the other end is a receiver.

In preferred embodiment of the present invention, said modulation circuit adopts direct intensity modulated mode.

In preferred embodiment of the present invention; Said optical sender comprises: line coding, modulation circuit and LED generator; Said input signal via line code conversion becomes to be adapted at the sign indicating number type that transmits in the LED light wave, is loaded on the emission light beam of LED generator after the conversion of light signal through the modulation circuit realization signal of telecommunication again.

In preferred embodiment of the present invention; Said optical receiver comprises photodetector, pre-amplification circuit, main amplifying circuit, automatic gain control circuit (AGC), equalizer, clock extracting circuit and decision circuit; Said light signal is realized undistorted output through pre-amplification circuit, main amplifying circuit successively after photodetector converts the signal of telecommunication to; The output signal is realized the level amplitude stabilization through automatic gain control circuit again, the digital signal of regenerating through equalizer, clock extracting circuit and decision circuit output at last.

In preferred embodiment of the present invention, said pre-amplification circuit adopts the preposition structure for amplifying of mutual impedance, and amplifying device adopts the cmos fet pipe of enhancement mode.

The invention has the beneficial effects as follows: optical transmitting set of the present invention and receiver are made on the same led chip, have realized receiving the consubstantiality design of emission, and it is compatible with other digital devices to be more convenient for like this, forms three-dimensional lightwave network more easily.

Description of drawings

Fig. 1 is the structural representation of gauche form LED optical communication transceiver of the present invention one preferred embodiment;

Fig. 2 is the structural principle sketch map of transmitter in the gauche form LED optical communication transceiver of the present invention;

Fig. 3 is the structural principle sketch map of receiver in the gauche form LED optical communication transceiver of the present invention;

Fig. 4 is the structural principle sketch map of gauche form LED optical communication transceiver of the present invention;

Reference numeral is following: 1, optical transmitting set, 2, optical receiver.

Embodiment

Below in conjunction with accompanying drawing preferred embodiment of the present invention is set forth in detail, thereby protection scope of the present invention is made more explicit defining so that advantage of the present invention and characteristic can be easier to it will be appreciated by those skilled in the art that.

See also Fig. 1, the embodiment of the invention comprises: optical transmitting set 1 and optical receiver 2, and optical transmitting set 1 is made on the same led chip with receiver 2, and said led chip is the gauche form structure, and an end is an optical transmitting set 1, and the other end is a receiver 2.Optical transmitting set 1 is used for that the signal of telecommunication of a constant bit rate of input is handled rear drive LED through the chip for driving of inside and launches the modulated light signal of the speed of response; The signal of telecommunication that make to receive transfers light signal to, and receiver 2 is used for optical signals photodetector with a constant bit rate and changes into the signal of telecommunication and be transferred to computer and network system.

See also Fig. 2; Optical sender 1 comprises: line coding, modulation circuit and LED generator; The effect of line coding is that the digital signal with input converts the sign indicating number type that transmits in the LED light wave of being adapted to, and the modulation circuit realization signal of telecommunication is loaded into light signal on the emission light beam of LED generator to the conversion of light signal; Adopt direct intensity modulated in the communication of LED lighting light wave; Promptly produce required light digital signal, change its Output optical power of injection current adjustment of LED, realize light intensity modulation through the injection current of directly controlling LED.

See also Fig. 3; Optical sender 2 comprises: photodetector, pre-amplification circuit, main amplifying circuit, automatic gain control circuit (AGC), equalizer, clock extracting circuit and decision circuit; Photodetector is positioned at optical receiving circuit foremost; Accomplish light signal and convert the signal of telecommunication to; Realize undistorted output through pre-amplification circuit, main amplifying circuit successively, the output signal is realized the level amplitude stabilization through automatic gain control circuit again, exports the digital signal of regeneration at last through equalizer, clock extracting circuit and decision circuit.

See also Fig. 4; Gauche form LED optical communication transceiver principle process comprises: line coding, modulation circuit, LED generator, LED receiver, control circuit; Input signal earlier converts the sign indicating number type that transmits in the LED light wave of being adapted to through line coding; Through modulation circuit the signal of telecommunication is changed into light signal again; Through the LED generator light signal is loaded into emission and transmits on the light beam, the signal that sends converts light signal to the signal of telecommunication through the LED receiver again, and the via line coding is exported signal again.

Be different from prior art, the present invention carries out integrated design with reflector 1 and receiver 2, and has realized receiving the consubstantiality design of emission, and it is compatible with other digital devices to be more convenient for like this, forms three-dimensional lightwave network more easily.

The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.

Claims

1. gauche form LED optical communication transceiver, comprising: optical transmitting set and optical receiver is characterized in that; Said optical transmitting set and receiver are made on the same led chip; And said led chip is the gauche form structure, and an end is an optical transmitting set, and the other end is a receiver.

2. gauche form LED optical communication transceiver according to claim 1 is characterized in that said modulation circuit adopts direct intensity modulated mode.

3. gauche form LED optical communication transceiver according to claim 1; It is characterized in that; Said optical sender comprises: line coding, modulation circuit and LED generator; Said input signal via line code conversion becomes to be adapted at the sign indicating number type that transmits in the LED light wave, is loaded on the emission light beam of LED generator after the conversion of light signal through the modulation circuit realization signal of telecommunication again.

4. gauche form LED optical communication transceiver according to claim 1; It is characterized in that; Said optical receiver comprises: photodetector, pre-amplification circuit, main amplifying circuit, automatic gain control circuit (AGC), equalizer, clock extracting circuit and decision circuit; Said light signal is realized undistorted output through pre-amplification circuit, main amplifying circuit successively after photodetector converts the signal of telecommunication to; The output signal is realized the level amplitude stabilization through automatic gain control circuit again, the digital signal of regenerating through equalizer, clock extracting circuit and decision circuit output at last.

5. gauche form LED optical communication transceiver according to claim 4 is characterized in that, said pre-amplification circuit adopts the preposition structure for amplifying of mutual impedance, and amplifying device adopts the cmos fet pipe of enhancement mode.