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Photoelectric oscillator

A photoelectric oscillator and laser technology, applied in solid-state lasers and other directions, can solve the problems of complex device structure and unstable output microwave signal, and achieve the effect of simplifying complexity and improving phase noise performance.

Active Publication Date: 2022-04-22
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Problems solved by technology

[0006] Aiming at the existing technical problems, the present invention proposes a photoelectric oscillator, which is used to at least partially solve the technical problems of the complex structure of the above-mentioned device and the insufficient stability of the output microwave signal

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  • Photoelectric oscillator
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Embodiment Construction

[0036] 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.

[0037] figure 1 A schematic diagram of a photoelectric oscillator based on sub-harmonic modulation and self-injection single-cycle oscillation provided by an embodiment of the present invention is schematically shown.

[0038] Such as figure 1 As shown, the optoelectronic oscillator can include, for example:

[0039] A semiconductor laser 1 is used for generating optical signals.

[0040] The three-port optical circulator 2 includes a first port a, a second port b, and a third port c, and the second port b is connected to the semiconductor laser 1 for receiving optical signals.

[0041] The first single-mode optical fiber 3 is connected to the third port c, and the first single-mode optical fiber 3 is used to delay the...

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Abstract

An optoelectronic oscillator, comprising: a semiconductor laser for generating optical signals; a three-port optical circulator comprising a first port, a second port and a third port, the second port is connected to the semiconductor laser for receiving optical signals; A single-mode optical fiber, connected to the third port, is used to delay the optical signal; the first optical coupler is used to divide the delayed optical signal into a first optical signal and a second optical signal; the optical feedback loop The road, connected to the first port, is used to adjust the optical power and polarization state of the first optical signal, and feeds back the adjusted first optical signal to the semiconductor laser, so that the semiconductor laser enters a single-cycle oscillation state; the photoelectric oscillation loop is used for The sub-harmonic microwave signal is generated, and the second optical signal is photoelectrically converted and amplified, combined with the sub-harmonic microwave signal to directly modulate the semiconductor laser. The photoelectric oscillator has high modulation efficiency and simple structure, which improves the output microwave signal stability, side-mode suppression ratio and phase noise performance.

Description

technical field [0001] The invention relates to the field of photoelectric technology, in particular to a photoelectric oscillator. Background technique [0002] Optoelectronic Oscillator (OEO), as one of the technical means of optically generated microwaves, has the advantages of simple structure, stable output signal, low phase noise, etc., and is widely used in radar systems, optical fiber communication systems, microwave photonic systems, optical wireless And high-precision measurement and other fields. [0003] Traditional OEO consists of laser light source, electro-optic modulator, erbium-doped fiber amplifier (Erbium-Doped Fiber Amplifier, EDFA), long optical fiber, photodetector, microwave power splitter, microwave amplifier, microwave bandpass filter and other optoelectronic devices. In order to realize the oscillation, EDFA or microwave amplifier can be used to compensate the optical loss or electrical loss in the photoelectric loop, so that the total gain of the ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S1/02
CPCH01S1/02
Inventor 戚宝侃张邦宏王辉谢亮
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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