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A photoelectric oscillator based on a direct-modulation semiconductor dual-mode laser

A photoelectric oscillator and laser technology, which is applied in the direction of the device for controlling the output parameters of the laser, etc., to achieve the effects of good stability, easy implementation and simple structure

Inactive Publication Date: 2015-09-23
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, an external modulator is still required in this scheme

Method used

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  • A photoelectric oscillator based on a direct-modulation semiconductor dual-mode laser
  • A photoelectric oscillator based on a direct-modulation semiconductor dual-mode laser
  • A photoelectric oscillator based on a direct-modulation semiconductor dual-mode laser

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Embodiment Construction

[0011] see figure 1 , the present invention provides a kind of optoelectronic oscillator based on direct modulation semiconductor dual-mode laser, comprising:

[0012] An amplified feedback laser (a), the amplified feedback laser (a) is a multi-segment semiconductor laser, and its structure is as follows figure 2 Shown, including laser region, phase region and amplified feedback region. The amplified feedback laser (a) is used to generate dual longitudinal mode lasing, and at the same time, the oscillation frequency of the photoelectric oscillator is adjusted by adjusting the injection current of the laser region, the phase region and the amplified feedback region of the amplified feedback laser, thereby realizing a wide range of continuous Tuned high-quality microwave signal output;

[0013] A photodetector (b), used for receiving and amplifying the optical signal generated by the feedback laser (a), and converting it into an electrical signal;

[0014] A microwave amplif...

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Abstract

A photoelectric oscillator based on a direct-modulation semiconductor dual-mode laser comprises an amplification feedback laser (a) used for producing dual longitudinal mode lasing, a photoelectric detector (b) used for converting optical signals output by the amplification feedback laser (a) into electric signals, a microwave amplifier (c) used for amplifying electric signals detected by the photoelectric detector (b) and a microwave power divider (d) used for injecting a part of the electric signals back into the amplification feedback laser (a). The part of the electric signals is output. According to the photoelectric oscillator, the amplification feedback laser (a) is employed to generate double longitudinal modes; and then dual longitudinal modes are subjected to frequency mixing through the photoelectric detector (b) and converted into microwave electric signals. The signals are amplified and then injected back into the amplification feedback laser (a). Direct modulation is carried out on the signals to form a self-feedback oscillation system, thus forming high-quality tunable microwave output.

Description

technical field [0001] The invention relates to the field of photoelectric hybrid technology, in particular to a photoelectric oscillator based on direct modulation semiconductor dual-mode lasers. Background technique [0002] As a high-quality microwave source, the Optoelectronic Oscillator (OEO) has been widely used in many fields such as communication systems, radar systems, sensing systems, and optical information processing. The traditional OEO is an optoelectronic hybrid oscillation circuit composed of a light source, an optical modulator, an energy storage fiber, a photodetector, a microwave narrowband filter, a microwave amplifier, and a microwave power divider. When the gain of the electrical signal in the loop is greater than the loss, a loop eigenmode located in the center of the microwave narrowband filter will form an oscillation in the loop to realize the output of the microwave signal. In order to generate high-purity, low-phase-noise microwave signals in gen...

Claims

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Application Information

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IPC IPC(8): H01S5/06
Inventor 潘碧玮陆丹赵玲娟张莉萌
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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