title: Full-range swept source optical coherence tomography based on carrier frequency by transmissive dispersive optical delay line.
abstract: A high speed swept source optical coherence tomography (SS-OCT) system capable of full-range imaging is presented. Wave-number carrier frequency is introduced into the spectral interference signal by a transmissive dispersive optical delay line (TDODL). High carrier frequency in the spectral interference signal corresponding to an equivalent distance-shift is exploited to obtain full-range OCT imaging. Theoretical development is conducted with the instantaneous coherence function introduced for a complete description of a spectral interference signal. Performance advantage of the TDODL-based method over the conventional approach where only one side (positive or negative path length difference) is used for imaging to avoid overlaying mirror artifacts is confirmed by the measured envelopes of spectral interference signal. Feasibility of the proposed method for full-range imaging is validated in a custom-built SS-OCT system by in vivo imaging of a biological sample.
authors.affiliation: Zhejiang University, State Key Lab of Modern Optical Instrumentation, 38 Zheda Rd., Hangzhou 310027, China.
authors.forename: Tong
authors.initials: T
authors.lastname: Wu
authors.forename: Zhihua
authors.initials: Z
authors.lastname: Ding
authors.forename: Chuan
authors.initials: C
authors.lastname: Wang
authors.forename: Minghui
authors.initials: M
authors.lastname: Chen
mesh_terms: D000818:Animals; D005123:Eye / Q000033:anatomy & histology / Q000737:chemistry; D005336:Fiber Optic Technology; D005399:Fishes; D007091:Image Processing, Computer-Assisted; D008962:Models, Theoretical; D015203:Reproducibility of Results; D012815:Signal Processing, Computer-Assisted; D041623:Tomography, Optical Coherence / Q000295:instrumentation / Q000379:methods*