Tapered single mode fiber tip for high lateral resolution imaging in optical coherence tomography

2007 ◽  
Author(s):  
Y. Verma ◽  
K. Divakar Rao ◽  
S. K. Mohanty ◽  
P. K. Gupta

2012 ◽  
Vol 516 ◽  
pp. 585-590
Author(s):  
Kozo Taguchi ◽  
Masafumi Totsuka

In this paper, we propose a high lateral resolution common-path Fourier domain optical coherence tomography (OCT) system with the use of a chemically etched single mode fibre. In our experiments, a single mode optical fibre of 840 nm was used for preparing the tapered tips. Our system used a conical microlens that was chemically etched by a selective chemical etching technique using an etching solution of buffered hydrofluoric acid (BHF). From the experimental results, we verified that our proposed optical coherence tomography system could operate as a common-path Fourier domain OCT system and the apex angle of the chemically etched single mode fibre tip was a very important parameter for generating high-resolution OCT images.







1996 ◽  
Vol 21 (12) ◽  
pp. 912 ◽  
Author(s):  
G. J. Tearney ◽  
M. E. Brezinski ◽  
J. G. Fujimoto ◽  
N. J. Weissman ◽  
S. A. Boppart ◽  
...  


1996 ◽  
Vol 21 (7) ◽  
pp. 543 ◽  
Author(s):  
G. J. Tearney ◽  
M. E. Brezinski ◽  
J. G. Fujimoto ◽  
N. J. Weissman ◽  
S. A. Boppart ◽  
...  


2017 ◽  
Vol 3 (2) ◽  
pp. 227-230
Author(s):  
Jonas Golde ◽  
Lars Kirsten ◽  
Edmund Koch

AbstractWe present an approach for polarization sensitive optical coherence tomography (PS-OCT) that solely requires a modification of the light source, a buffered swept source laser. For this purpose a single-mode fiber-based Fourier domain mode locked laser is extended by fourfold buffering with manual fiber polarization controllers to emit alternating sweep polarizations, while the polarization contrast calibration is realized by a high-speed polarimeter. As the introduced setup utilizes standard scanning and detection units, the proposed method is a promising way to enhance various swept source OCT systems by polarization sensitive imaging. Preliminary measurements of a human finger nail with different polarization contrasts demonstrate the feasibility of the concept.



2012 ◽  
Vol 198-199 ◽  
pp. 1167-1173
Author(s):  
Yan Jun Li ◽  
Ji Gui Zhu ◽  
Zhong Dong Liu ◽  
Hai Xiao

A single mode fiber assembled with a specified length graded index multimode fiber as a collimator, which is used in common-path optical coherence tomography (CPOCT) is described in this paper. Compared with conventional collimator lens, this assembled fibers structure possesses the advantages of small volume, easy to be fused or connected with other part of the CPOCT system. Furthermore, with this assembled structure an all fiber CPOCT system is constructed which has the potential to detect the internal bodily organs and tissues of human being. Numerical simulation and experiments are implemented to verify the effectiveness of this method.



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