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
CN104934853AInactive Publication Date: 2015-09-23INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
Publication Date
2015-09-23
Estimated Expiration
Not applicable · inactive patent

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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.
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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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