Direct-adjustment analog electro-optical conversion integrated component

Abstract

The invention relates to the field of microwave photons and radio over fiber, and provides a direct-adjustment analog electro-optical conversion integrated component. The component comprises a microwave chip, a high-speed laser chip, a microwave matching network, a temperature regulation and control unit, a coupling lens, a control circuit unit, a radio frequency input port and an optical output port, hybrid integrated assembly in a shielding shell is achieved through adoption of a micro-assembly process, electric signals and optical signals are respectively interconnected among all the components through lead bonding, lens coupling and the like, and radio frequency microwave signals received from a microwave matching network are loaded to the optical signals to achieve electro-optical conversion, so that the radio frequency signals are modulated on the optical signals to be output through an optical output port. According to the invention, the integrated integration of the electro-optical conversion component is achieved by using the micro-assembly process, the cost, the volume and the weight are greatly reduced, and the integration degree, the expandability and the reliability are improved.

Description

technical field [0001] The invention relates to the field of microwave photons and light-borne radio frequency, in particular to a direct modulation analog electro-optical conversion integrated assembly. Background technique [0002] In the past few decades, radio frequency communication technology has developed rapidly. However, due to the frequency band characteristics of radio frequency signals, in the application scenarios of long-distance transmission, the direct transmission method based on low attenuation and anti-interference radio frequency cables is very expensive; Benefiting from the increasing maturity of optical fiber technology, Radio over Fiber (RoF) communication technology has been widely used. This technology is to achieve high-speed radio frequency signal modulation by modulating high-speed radio frequency analog signals onto optical signals. bandwidth, low loss and long-distance transmission. In the optical radio frequency communication system, the elect...

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Problems solved by technology

In the optical radio frequency communication system, the electro-optic conversion module is used as a light source to provide the optical carrier signal and modulate the radio frequency signal to the optical carrier signal, which is a very important part of the system; the common implementation methods of the electro-optical conversion module are divided into laser-based The core direct modulation method or the external modulation method combining the laser and the modulator; the direct modulation laser has been widely concerned due to its small size, simple process, low cost, and easy integration; however, with the System integration and functional requirements are constantly improving and evolving. We have also put forward more requirements for electro-optic conversion modules such as high integration and power control. , The way of optical fiber interconnection has been unable to meet the needs of users for miniaturization

Chinese patent CN109361463A discloses a multi-channel ROF system and its implementation method. Eight radio frequency signals are respectively input to eight electro-optical conversion boxes of the optical transceiver, wherein the optical transmission box includes a low noise amplifier, a digitally controlled attenuator, a detector, and a laser. and MCU control and LD drive circuits, etc.; however, due to the different processing techniques of optoelectronic devices such as lasers, microwave modules, and PCBs, there are still problems such as large volume, poor stability, and difficulty in integration in the process of assembling optoelectronic devices and microwave devices.

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