Optical frequency comb device based on all polarization-maintaining fiber and mode locking and frequency locking method

An optical frequency comb and polarization-maintaining optical fiber technology, applied in the field of lasers, can solve problems affecting linear and nonlinear phase delays, polarization components cannot produce cross-phase modulation, and affect laser transmission stability. It achieves mechanical vibration insensitivity, high The effect of stability

Active Publication Date: 2018-02-23
UNIV OF SHANGHAI FOR SCI & TECH
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Problems solved by technology

Polarized components cannot generate cross-phase modulation after walk-off
[0008] Second, pulse splitting occurs due to the walk-off of the polarization components on the fast and slow axes
The...

Method used

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  • Optical frequency comb device based on all polarization-maintaining fiber and mode locking and frequency locking method
  • Optical frequency comb device based on all polarization-maintaining fiber and mode locking and frequency locking method
  • Optical frequency comb device based on all polarization-maintaining fiber and mode locking and frequency locking method

Examples

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Embodiment Construction

[0025] Such as figure 1 A schematic structural diagram of an optical frequency comb device 100 based on an all polarization maintaining fiber is shown. The whole device is composed of full polarization-maintaining optical fiber and polarization-maintaining optical fiber device.

[0026] The device includes a first pump source 101, an acousto-optic modulator 102, a first wavelength division multiplexer 103, a first gain fiber 104, an output coupler 105, a loss control device 106, a spiral fiber 107, a polarization-dependent isolator 108, A second pumping source 109 , a second wavelength division multiplexer 110 , a second gain fiber 111 , a piezoelectric ceramic 112 , an electro-optic modulator 113 and an output port 114 . The output light of the first pump source 101 enters the optical fiber circulation link through the acousto-optic modulator 102 as a power control device, and the light passes through the first wavelength division multiplexer 103, the first gain fiber 104, a...

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Abstract

The invention relates to an optical frequency comb device based on an all polarization-maintaining fiber and a mode locking and frequency locking method. The generation of mode locking pulses is realized by nonlinear polarization rotation of the pulses in a spiral fiber. The repetition rate of the device is locked through a mechanical method or an optical method. Through an all polarization-maintaining fiber amplifier, a polarization-maintaining nonlinear fiber and a PPLN crystal, carrier phase zero frequency signals of the pulses are acquired; the carrier phase zero frequency signals are processed by a circuit and are then fed back to a power control device in the device or fed back to an intracavity loss control device, and locking of the carrier phase zero frequency signals is realized.Based on the all polarization-maintaining fiber, a mode-locked laser is built, the pulses generate nonlinear polarization rotation in the spiral fiber, and walk-off effects of the pulses are solved through special arrangement of multiple sections of spiral fibers. The made all polarization-maintaining fiber optical frequency comb device has the characteristics of extremely high stability and insensitivity to temperature fluctuation and mechanical vibration.

Description

technical field [0001] The invention relates to a laser technology, in particular to an optical frequency comb device and a mode-locking and frequency-locking method based on an all-polarization-maintaining optical fiber. Background technique [0002] Optical frequency combs have very important applications in precision spectrum measurement, time-frequency reference, and absolute distance measurement. Currently, the key component of optical frequency combs is the ultrashort-pulse laser oscillator. The pulse mode-locking principle of the ultrashort pulse laser oscillator, the optical path structure and other factors have a crucial influence on the performance of the optical comb. [0003] At present, optical frequency combs based on optical fiber structures have significant advantages in terms of stability and practicability compared with optical combs based on solid gain media, such as bendable waveguide structure optical paths, light weight and easy integration, and good h...

Claims

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Application Information

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IPC IPC(8): H01S3/067H01S3/11H01S3/108
CPCH01S3/06704H01S3/06712H01S3/108H01S3/1112
Inventor 郝强付寒梅曾和平
Owner UNIV OF SHANGHAI FOR SCI & TECH
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