Acta Optica Sinica, Volume. 41, Issue 6, 0606001(2021)
Optimization of Optical Coherence Tomography Light Source Based on Pump Pulse of Medical Photonic Crystal Fibers
Fig. 1. Temporal and spectral distributions of the input and output recorded after 120 m of propagation for pump pulses with different central wavelengths in different fibers: PCF1, PCF2, PCF3. (a) λC=1.06 μm; (b) λC=1.31 μm; (c) λC=1.55 μm
Fig. 2. Evolution of the output spectra FWHM ΔλFWHM and the corresponding axial resolution of OCT systems lr for pump pulses with different central wavelengths in corresponding different fibers after a distance of 120 m versus the soliton factor N in the range from 55 to 95. (a) Output spectra FWHM ΔλFWHM; (b) corresponding axial resolution of OCT systems lr
Fig. 3. Temporal and spectral distributions of the output recorded after 180 m of propagation in PCF3 for different pump pulse peak powers. (a) P0=4 W; (b) P0=8 W; (c) P0=15 W; (d) P0=18 W; (e) P0=20 W
Fig. 4. Evolution of the output 10 dB bandwidth Δλ10 dB and flatness SFlat after a distance of 180 m in PCF3 versus pump pulse peak power P0 in the range from 2 to 22.5 W, in which the blue vertical dot-and-dash line represents the preferred results
Fig. 5. Temporal and spectral distributions of the output recorded after 180 m of propagation in PCF3 for different pump pulse widths. (a) TFWHM=0.6 ps; (b) TFWHM=1.0 ps; (c) TFWHM=1.4 ps; (d) TFWHM=1.8 ps; (e) TFWHM=2.2 ps
Fig. 6. Evolution of the output 10 dB bandwidth and flatness after a distance of 180 m PCF3 versus initial pulse width in the range from 0.5 to 2.4 ps, in which the blue vertical dot-and-dash line represents the preferred results
Fig. 7. Distribution of the output spectra recorded after 120 m of propagation in PCF3 for four pump pulses with different initial parameters. (a) P0=14 W, TFWHM=2 ps; (b) P0=22 W, TFWHM=2 ps; (c) P0=14 W, TFWHM=1 ps
Fig. 8. Evolution of the output 10 dB bandwidth and the corresponding flatness in 80~180 m for pump pulses with different shapes in PCF3 versus fiber length in the range from 0 to 180 m. (a) Output 10 dB bandwidth; (b) corresponding flatness
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Jiyang Tian, Guangye Yang, Sandan Wang, Jinpeng Yuan. Optimization of Optical Coherence Tomography Light Source Based on Pump Pulse of Medical Photonic Crystal Fibers[J]. Acta Optica Sinica, 2021, 41(6): 0606001
Category: Fiber Optics and Optical Communications
Received: Sep. 2, 2020
Accepted: Nov. 2, 2020
Published Online: Apr. 7, 2021
The Author Email: Yang Guangye (ygy@sxmu.edu.cn)