title: Simultaneous refractive index and thickness measurements of bio tissue by optical coherence tomography.
abstract: This paper presents two techniques based on optical coherence tomography, the "focus tracking method" and the "optical path shifting method," for determining refractive index and thickness simultaneously, which are especially useful for bio tissues. From comparison of these two methods, it was found that the focus tracking method is suitable for in vivo measurement, but does not have high precision. The optical path shifting method is limited to in vitro measurement, but has high precision. Using the optical path shifting method, the refractive indices of cucumber were measured at the wavelength of 850 and 1300 nm.
authors.affiliation: Nankai University, Physics Department, Tianjin 300071, People's Republic of China.
authors.forename: Xinyu
authors.initials: X
authors.lastname: Wang
authors.forename: Chunping
authors.initials: C
authors.lastname: Zhang
authors.forename: Lianshun
authors.initials: L
authors.lastname: Zhang
authors.forename: Lingling
authors.initials: L
authors.lastname: Xue
authors.forename: Jianguo
authors.initials: J
authors.lastname: Tian
mesh_terms: D005336:Fiber Optic Technology / Q000295:instrumentation / Q000379:methods*; D007368:Interferometry / Q000295:instrumentation / Q000379:methods; D012031:Refractometry / Q000295:instrumentation / Q000379:methods*; D014054:Tomography / Q000295:instrumentation / Q000379:methods*