研究目的
Investigating the improvement of spectral performance of a fiber sensor by introducing Brillouin slow light into it.
研究成果
The spectral sensitivity of the fiber sensor can be improved by introducing slow light, with experimental results showing an enhancement of up to 1.145 times. Future work could achieve higher sensitivity by increasing the group index.
研究不足
The limitations include the pump power's limitation and the low nonlinear coefficient of the SMF used in the experiment, which restricts the achievable sensitivity enhancement.
1：Experimental Design and Method Selection:
The experiment involves designing a scheme to improve the spectral performance of a sensor by introducing Brillouin slow light. The theoretical models include the phase difference in MZI and the delay time of Brillouin slow light.
2：Sample Selection and Data Sources:
The experiment uses a 1541-nm narrow linewidth laser, single-mode fiber (SMF), and other optical components.
3：List of Experimental Equipment and Materials:
Includes a 1541-nm laser, EDFA, optical circulator, polarization controller, isolator, SMF, coupler, PZT, EOM, pulse generator, oscilloscope, and VOA.
4：Experimental Procedures and Operational Workflow:
The setup involves generating Brillouin laser, modulating it with PZT, and observing the output through MZI to measure spectral sensitivity enhancement.
5：Data Analysis Methods:
The analysis involves measuring group delay and phase difference to calculate spectral sensitivity enhancement.
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获取完整内容-
narrow linewidth laser
1541-nm
Used as a light source in the experiment.
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EDFA
Amplitude control of the Brillouin pump wave.
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optical circulator
OC
Part of the Brillouin laser setup.
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polarization controller
PC
Part of the Brillouin laser setup.
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isolator
ISO
Part of the Brillouin laser setup.
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single-mode fiber
SMF
Used as a medium for Brillouin scattering.
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coupler
80:20
Part of the Brillouin laser setup.
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piezoelectric ceramic
PZT
Used to modulate Brillouin laser.
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electro-optic modulator
EOM
Used to chop the Stokes Lasing into optical pulses.
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pulse generator
Drives the EOM with 66-ns square electrical pulses.
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oscilloscope
Used to observe the output signal.
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optical attenuator
VOA
Adjusts the power of the probe signal.
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