High-speed imaging with endoscopic optical coherence tomography using bending vibration of optical fiber

2009 ◽  
Author(s):  
Ryoichi Isago ◽  
Kentaro Nakamura
Keyword(s):  
Optical Coherence Tomography ◽  
Optical Fiber ◽  
High Speed ◽  
Optical Coherence ◽  
High Speed Imaging ◽  
Bending Vibration ◽  
Endoscopic Optical Coherence Tomography

Dynamic Observation of Sweat Glands of Human Finger Tip Using All-Optical-Fiber High-Speed Optical Coherence Tomography

2005 ◽  
Vol 44 (No. 26) ◽  
pp. L854-L856 ◽  
Author(s):  
Masato Ohmi ◽  
Kenji Nohara ◽  
Yoshihiro Ueda ◽  
Toshie Fuji ◽  
Masamitsu Haruna
Keyword(s):  
Optical Coherence Tomography ◽  
Optical Fiber ◽  
High Speed ◽  
Sweat Glands ◽  
Optical Coherence ◽  
Dynamic Observation ◽  
All Optical ◽  
Human Finger ◽  
Finger Tip

scholarly journals Design and Optimization of a Linear Wavenumber Spectrometer with Cylindrical Optics for Line Scanning Optical Coherence Tomography

Sensors ◽  
2021 ◽  
Vol 21 (19) ◽  
pp. 6463
Author(s):  
Sevin Samadi ◽  
Javad Dargahi ◽  
Sivakumar Narayanswamy
Keyword(s):  
Optical Coherence Tomography ◽  
Image Quality ◽  
High Speed ◽  
High Efficiency ◽  
Optical Design ◽  
Optical Coherence ◽  
High Speed Imaging ◽  
Nonlinearity Error ◽  
Line Scanning

We report the design of a high-efficiency spectral-domain spectrometer with cylindrical optics for line scanning optical coherence tomography (OCT). The spectral nonlinearity in k space (wavenumber) lowers the depth-dependent signal sensitivity of the spectrometers. For linearizing, in this design, grating and prism have been introduced. For line scanning, a cylindrical mirror is utilized in the scanning part. Line scanning improves the speed of imaging compared to fly-spot scanning. Line scanning OCT requires a spectrometer that utilizes cylindrical optics. In this work, an optical design of a linear wavenumber spectrometer with cylindrical optics is introduced. While there are many works using grating and prism to linearize the K space spectrometer design, there is no work on linearizing the k-space spectrometer with cylindrical optics for line scanning that provides high sensitivity and high-speed imaging without the need for resampling. The design of the spectrometer was achieved through MATLAB and ZEMAX simulations. The spectrometer design is optimized for the broadband light source with a center wavelength of 830 ± 100 nm (8.607 μm−1− 6.756 μm−1 in k-space). The variation in the output angle with respect to the wavenumber can be mentioned as a nonlinearity error. From our design results, it is observed that the nonlinearity error reduced from 147.0115 to 0.0149 Δθ*μm within the wavenumber range considered. The use of the proposed reflective optics for focusing reduces the chromatic aberration and increases image quality (measured by the Strehl ratio (SR)). The complete system will provide clinicians a powerful tool for real-time diagnosis, treatment, and guidance in surgery with high image quality for in-vivo applications.

Miniaturized precalibration-based Lissajous scanning fiber probe for high speed endoscopic optical coherence tomography

2020 ◽  
Vol 45 (8) ◽  
pp. 2470 ◽  
Author(s):  
Tong Wu ◽  
Lei Zhang ◽  
Jiming Wang ◽  
Wenqi Huo ◽  
Yuangang Lu ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
High Speed ◽  
Optical Coherence ◽  
Fiber Probe ◽  
Endoscopic Optical Coherence Tomography ◽  
Scanning Fiber

High-Speed In Vivo Endoscopic Optical Coherence Tomography

1999 ◽  
Author(s):  
Joseph A. Izatt ◽  
Andrew M. Rollins ◽  
Rujchai Ung-arunyawee ◽  
Amitabh Chak ◽  
Richard C. Wong ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
High Speed ◽  
Optical Coherence ◽  
Endoscopic Optical Coherence Tomography
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