Spectral Optical Coherence Tomography Using Two-Phase Shifting Method
MA Zhen-He1, Ruikang K. Wang1,2, ZHANG Fan1, YAO Jian-Quan1
1Institute of Lasers and Optoelectronics, College of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072
2Institute of BioScience and Technology, Cranfield University at Silsoe, Bedfordshire MK45 4DT, UK
Spectral Optical Coherence Tomography Using Two-Phase Shifting Method
MA Zhen-He1;Ruikang K. Wang1,2;ZHANG Fan1;YAO Jian-Quan1
1Institute of Lasers and Optoelectronics, College of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072
2Institute of BioScience and Technology, Cranfield University at Silsoe, Bedfordshire MK45 4DT, UK
Abstract： A two-phase shifting method is introduced to eliminate the strong autocorrelation noise inherent in spectral optical coherence tomography and to mitigate the unwanted auto- and cross-coherent terms introduced by the reflections from various optical interfaces present in the system. Furthermore, this method is also able to amplify the desired signal by a factor of 2. The feasibility of such a method is demonstrated using a mirror-like object. An intact porcine cornea tissue in vitro is also used to show the potential of this method for biological imaging.
2005, Vol. 22 
