RU2374728C1 - Electronic optical amplifier - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: power increase is reached owing to introduction of electroluminescent converter, resonator lens, two turned reflecting mirrors and a turned semitransparent mirror. At that, optical output of light-emitting diode is connected to the first optical input of the turned semitransparent mirror having optical output connected through electroluminescent converter, through lens, through resonator to optical input of the first turned reflecting mirror, the optical output of which is connected to optical input of the second turned reflecting mirror having optical output connected to the second optical input of the above turned semitransparent mirror.

EFFECT: increasing power of reradiation without using massive assemblies.

1 dwg

Description

The invention relates to the field of optoelectronics and can be used in optical transceiver systems.

Known optoelectronic amplifier, presented in the patent of the author No. 2239174, re-emitting light. In it, light from a radiation source, which may be laser, is amplified in an optoelectronic converter. Further, the light passes through the elements providing its feedback. However, the converter has a low sensitivity, which does not allow to increase the power of re-emission of light.

Known optoelectronic amplifier presented in the book Kriksunov L.Z. "Handbook of infrared technology", 1978, p. 310. It consists of a photoresistor and an LED. The light from the radiation source, which is, for example, a laser or a laser re-emitter, irradiates a photoresistor that converts the light signal into an electric signal, which then goes to the input of the LED. The latter emits light whose power exceeds the power of the light incident on the photoresistor. As a result, amplification of the light reradiated by the LED is realized. However, to increase the power of re-emission of light, it is necessary to use bulky nodes.

Using the proposed device, an increase in the power of re-emission of light without the use of bulky nodes. This is achieved by introducing an electroluminescent converter, a lens, a resonator, two rotated reflective mirrors and a rotated translucent mirror, while the optical output of the LED is connected to the first optical input of a translucent mirror having an optical output connected through an electroluminescent converter, through the lens, through the resonator with the optical input of the first rotated reflective mirror, the optical output of which is connected to the optical input of the second rotated reflective mirror a laser having an optical output coupled to a second optical input of the aforementioned rotated translucent mirror.

In the drawing and in the text, the following notation:

1 - radiation source;

2 - photoresistor;

3 - LED;

4 - rotated reflective mirror;

5 - rotated translucent mirror;

6 - electroluminescent converter;

7 - lens;

8 - rotated reflective mirror;

9 - resonator

wherein the optical output of the radiation source 1 through the photoresistor 2 is connected to the optical input of the LED 3 having an optical output connected to the first optical input of the rotated translucent mirror 5 having an optical output connected through an electroluminescent transducer 6, through the lens 7, through an optical resonator 9 the input of the rotated reflective mirror 8, the optical output of which is connected to the optical input of the rotated reflective mirror 4, having an optical output connected to the second optical input m aforementioned rotated semitransparent mirror 5.

The operation of the device is as follows. The radiation source 1 emits light that enters the optical input of the photoresistor 2. The source 1 can be an optical transmitter, a laser, including a pulsed or a reflector of laser radiation. Photoresistor 2 converts the optical signal into an electric signal coming from the output of the photoresistor to the input of LED 3, which converts the electrical signal into an optical one. The light signal at the optical output of the LED 3 has a greater power than at the input of the photoresistor 2. From the optical output of the LED, the amplified light signal is fed to the first optical input of the rotated translucent mirror 5, from the optical output of which the optical signal then goes to the electroluminescent converter 6, which is even more amplifies the light signal and changes its spectrum. The gain of the converter can be 10 ⁴ .

An example of a specific design of an electroluminescent converter is presented in the aforementioned reference book on infrared technology on pages 309-310, Fig.6.70, and an example of a photoresistor with an LED is presented on the same page 310, Fig.6.71. The amplified light energy from the optical output of the converter 6 enters through the lens 7 into the resonator 9. The lens forms a beam divergence that irradiates the active layer of the resonator 9. A crystal can be used as the active layer. In this case, the radiation frequency of the resonator 9 may be equal to the frequency of light emission from the radiation source 1.

A transducer 6 is used as a pumping unit, and the frequency of light from its optical output exceeds the radiation frequency of resonator 9. An electroluminescent converter with such a radiation frequency of the phosphor is selected that provides the highest radiation power of the resonator 9. Light emitted from the resonator 9 is successively reflected from the turned reflective mirrors 8 , 4 and enters the second optical input of the aforementioned rotated translucent mirror 5, from which it is also reflected and again enters the elec rolyuministsentny converter 6.

Thus, due to the circulation along the circuit, even more light is amplified and feedback is realized, which compensates for the loss of light energy when it passes through a translucent mirror 5. In addition, the use of bulky pump lamps is not required. The gain of the device may have a value of 10 ¹⁰ .

The proposed device can be used in optical location systems, increasing their range.

The device can also be used in communication centers for relaying optical information, including via fiber-optic lines.

Claims (1)

An optoelectronic amplifier consisting of a radiation source, a photoresistor and an LED, where the optical output of the radiation source through a photoresistor is connected to the optical input of the LED, characterized in that an electroluminescent converter, a lens, a resonator, two rotated reflective mirrors and a rotated translucent mirror are introduced, while the optical output the LED is connected to the first optical input of the rotated translucent mirror having an optical output coupled through an electroluminescent conversion ovatel, through the lens, through the cavity with a first optical input of the rotated reflecting mirror, whose optical output coupled to the optical input of the second rotated reflecting mirror having an optical output coupled to a second optical input rotated above the semitransparent mirror.