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Photoelectric Oscillator Based on Self-feedback Single Period Oscillation of Directly Modulated Semiconductor Laser

An optoelectronic oscillator and optoelectronic oscillation technology, applied in solid-state lasers and other directions, can solve the problems of unstable oscillation and insufficient modulation efficiency, and achieve the effects of improving work stability, reducing power consumption and cost, and low oscillation threshold.

Active Publication Date: 2020-02-21
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

[0005] In view of this, the purpose of the present invention is to provide a photoelectric oscillator based on direct modulation semiconductor laser self-feedback single-cycle oscillation, to solve the problems of insufficient modulation efficiency and unstable oscillation in the prior art

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  • Photoelectric Oscillator Based on Self-feedback Single Period Oscillation of Directly Modulated Semiconductor Laser
  • Photoelectric Oscillator Based on Self-feedback Single Period Oscillation of Directly Modulated Semiconductor Laser
  • Photoelectric Oscillator Based on Self-feedback Single Period Oscillation of Directly Modulated Semiconductor Laser

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0035] The photoelectric oscillator based on the direct modulation semiconductor laser self-feedback single-cycle oscillation provided by the present invention, such as figure 1 Shown includes: semiconductor laser 3, three-port optical circulator 4, first optical coupler 6, optical feedback loop 1 and photoelectric oscillation loop 2, using a double-loop structure of optical feedback loop 1 and optoelectronic oscillation loop 2 output a microwave signal with a high spectral spurious suppression ratio; the optical feedback loop 1 includes: a second optical coupler 7, an adjustable optical attenuator 8, and a polarization controller 9; the photoelectric oscillation loop 2 includes: a photodetector 11, a microwave Amplifier ...

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Abstract

The invention discloses a photoelectric oscillator based on self-feedback single cycle oscillation of a directly modulated semiconductor laser, and belongs to the technical field of photoelectric oscillators. The photoelectric oscillator includes a semiconductor laser body, a first optical coupler, an optical feedback loop and a photoelectric oscillation loop. The optical feedback loop includes asecond optical coupler, a variable optical attenuator and a polarization controller. The photoelectric oscillation loop includes a photoelectric detector, a microwave amplifier and a microwave power divider. When the semiconductor laser works in a single cycle oscillation state, the oscillation frequency is the photoelectric oscillator operating frequency. The photoelectric oscillator based on theself-feedback single cycle oscillation of the directly modulated semiconductor laser adopts an optical feedback injection method to enable the semiconductor laser to work in the single cycle oscillation state, significantly improves the working stability and modulation efficiency, and reduces the oscillation starting condition.

Description

technical field [0001] The invention relates to the field of photoelectric oscillators, in particular to a photoelectric oscillator based on direct modulation semiconductor laser self-feedback single-cycle oscillation. Background technique [0002] As a high-quality microwave signal source, the Optoelectronic Oscillator (OEO) has important applications in the fields of communication systems, radar systems, optical wireless communications, microwave photonics, and high-precision measurement. The traditional OEO is composed of a laser light source and a photoelectric positive feedback loop. The photoelectric positive feedback loop includes optical modulators, long optical fibers, photodetectors, microwave narrowband filters, microwave amplifiers, microwave power dividers and other optoelectronic devices. A loop eigenmode located in the center of the microwave narrowband filter will form an oscillation in the photoelectric oscillation loop to realize the output of microwave sig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S1/02
CPCH01S1/02
Inventor 陈光灿赵玲娟陆丹郭露赵武
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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