Multi-system comparison of optical coherence tomography performance with point spread function phantoms

2013 ◽  
Author(s):  
Joshua Pfefer ◽  
Anthony Fouad ◽  
Chao-Wei Chen ◽  
Wei Gong ◽  
Peter Tomlins ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Point Spread Function ◽  
Optical Coherence ◽  
Point Spread ◽  
Spread Function

Spectral shaping to improve the point spread function in optical coherence tomography

2003 ◽  
Vol 28 (20) ◽  
pp. 1921 ◽  
Author(s):  
A. Ceyhun Akcay ◽  
Jannick P. Rolland ◽  
Jason M. Eichenholz
Keyword(s):  
Optical Coherence Tomography ◽  
Point Spread Function ◽  
Optical Coherence ◽  
Spectral Shaping ◽  
Point Spread ◽  
Spread Function

Deconvolution with fall-off compensated axial point spread function in spectral domain optical coherence tomography

2011 ◽  
Vol 284 (12) ◽  
pp. 3173-3180 ◽  
Author(s):  
Kai Wang ◽  
Zhihua Ding ◽  
Minghui Chen ◽  
Chuan Wang ◽  
Tong Wu ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Point Spread Function ◽  
Spectral Domain ◽  
Optical Coherence ◽  
Point Spread ◽  
Spread Function

scholarly journals Tandem Mach Zehnder Directional Coupler Design and Simulation on Silicon Platform for Optical Coherence Tomography Applications

Sensors ◽  
2020 ◽  
Vol 20 (4) ◽  
pp. 1054 ◽  
Author(s):  
Yi-Ting Lu ◽  
Benedictus Yohanes Bagus Widhianto ◽  
Shih-Hsiang Hsu ◽  
Che-Chang Chang
Keyword(s):  
Optical Coherence Tomography ◽  
Wavelength Range ◽  
Directional Coupler ◽  
Signal To Noise Ratio ◽  
Optical Coherence ◽  
Coupling Ratio ◽  
Point Spread ◽  
Splitting Ratio ◽  
Spread Function ◽  
Phase Term

We design and compare the splitting ratio wavelength flatness of directional coupler (DC), Mach-Zehnder directional coupler (MZDC), and tandem MZDC. All coupler responses are analyzed, and tandem MZDC performance is the best in the wavelength insensitivity compared with the other two. An MZDC with any coupling ratio could be utilized to match the maximum flatness in a 40-nm wavelength range. To extend a broad flatness range, the tandem MZDC is proposed and still follows the Mach Zehnder structure taking two MZDCs as couplers connected through a decoupled region. Unlike DC, MZDC with the flat wavelength response has a non-linear output phase. Hence, using two wavelength-insensitive MZDCs as the coupling function in a tandem MZDC could demonstrate a more extensive decoupled phase term to maximize the flat wavelength response. The tandem MZDC theoretically demonstrates the splitting ratio with 100-nm flatness in the wavelength range from 1250 nm to 1350 nm. Finally, a point spread function through the tandem MZDC shows a 24-dB signal-to-noise ratio improvement in optical coherence tomography applications.

Sign in / Sign up

Export Citation Format

Share Document