Sine-modulated wavelength-independent full-range complex spectral optical coherence tomography with an ultra-broadband light source
Zhang, Qiukun and Zhong, Shuncong and Zhong, Jianfeng (2015) Sine-modulated wavelength-independent full-range complex spectral optical coherence tomography with an ultra-broadband light source. Advances in Mechanical Engineering, 7 (5). pp. 1-9. ISSN 1687-8140
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Abstract
We present a full-range complex spectral domain optical coherence tomography with an ultra-broadband light source based on sinusoidal modulation. For the sinusoidal modulation strategy, a lead zirconate titanate stack actuator is employed to achieve the sinusoidal vibration of a mirror and therefore to get a series of spectral interferogram with different phase delays. The purpose of this strategy is to get higher performance complex-conjugate artifact elimination. Bessel separation of the signal sequence at each wavelength of the spectrometer was used to reconstruct the real and imaginary components of interference fringes; however, the sinusoidal modulation method is independent of light source wavelength. The experimental results demonstrated that the method had an excellent performance in a complex-conjugate suppression of 50 dB for a full width at half maximum bandwidth of 236 nm, and it has better anti-artifact ability and more flexible range in phase shifting than the conventional wavelength-dependent phase-shifting method on a full-range complex spectral optical coherence tomography system. Furthermore, the effect of the hysteresis error of lead zirconate titanate actuators on the performance of complex-conjugate artifact elimination was investigated and the solution of lead zirconate titanate positioning performance for both conventional phase-shifting and sine-modulation methods was suggested.
Creators(s): | Zhang, Qiukun, Zhong, Shuncong and Zhong, Jianfeng; | Item type: | Article |
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ID code: | 53591 |
Keywords: | sinusoidal phase modulation, complex-conjugate mirror error, spectral interferometry, optical coherence tomography, Optics. Light, Atomic and Molecular Physics, and Optics |
Subjects: | Science > Physics > Optics. Light |
Department: | Faculty of Engineering > Naval Architecture, Ocean & Marine Engineering |
Depositing user: | Pure Administrator |
Date deposited: | 04 Jul 2015 04:04 |
Last modified: | 04 Feb 2021 04:01 |
Related URLs: | |
URI: | https://strathprints.strath.ac.uk/id/eprint/53591 |
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