Optical digital-to-analog conversion device and method based on balance detector

A balanced detector and digital-to-analog conversion technology, applied in the field of signal processing, can solve problems such as bulky size, complex device structure, and inability to integrate monolithically, and achieve the effects of easy integration, reduced complexity and cost, and simple assembly.

Inactive Publication Date: 2020-08-04
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
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Problems solved by technology

However, these solutions have disadvantages such as complex device structure, bulky size, and inability to integrate monolithically.

Method used

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  • Optical digital-to-analog conversion device and method based on balance detector
  • Optical digital-to-analog conversion device and method based on balance detector
  • Optical digital-to-analog conversion device and method based on balance detector

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0026] The invention discloses a digital-to-analog conversion modulation device based on a balanced detector, which includes a laser transmitter for emitting laser light as an optical carrier; an optical splitter connected with the laser transmitter for dividing the input optical carrier signal into Two channels of output, and there is a fixed power ratio between the two channels; the photoelectric modulator is used to modulate the input digital signal to the optical carrier, and output the modulated optical carrier signal; the balance detector, with two photoelectric modulators Connected with the device, it is used to convert the input dimmed carrier signal into an electrical signal for output. In an exemplary embodiment...

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Abstract

An optical digital-to-analog conversion device based on a balance detector comprises a laser transmitter used for transmitting laser as an optical carrier; an optical divider which is connected with the laser emitter and is used for dividing an input optical carrier signal into two signals to be outputted, wherein a fixed power ratio exists between the two signals; the photoelectric modulators which are used for modulating an input digital signal to an optical carrier and outputting a modulated optical carrier signal; and the balance detector which is connected with the two photoelectric modulators and is used for converting the input modulated optical carrier signal into an electric signal and outputting the electric signal. According to the invention, the two-bit digital-to-analog conversion is realized by using the balance detector, the assembly is simple, the integration is easy, the complexity and the cost of the system are reduced, and the realization of a full-transparent optical network is facilitated.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to an optical digital-to-analog conversion device and method based on a balanced detector. Background technique [0002] Digital-to-analog converter (DAC) is one of the key devices in information processing and data transmission, and it is widely used in radar, image display and arbitrary waveform generator and other fields. The research of DAC technology has increasingly become a key technology in the field of signal processing. Traditional electrical analog-to-digital conversion cannot meet today's demand for signal processing due to the characteristics of electronic devices such as low speed and susceptibility to electromagnetic interference. Optical digital-to-analog conversion is the process of using optical devices to realize optical quantization and digital-to-analog conversion in the optical domain. The optical digital-to-analog conversion process has advantages ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F7/00
CPCG02F7/00
Inventor 王姣姣刘建国
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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