Improvement of axial resolution of spectral domain optical coherence tomography with wide band PLC splitter

被引：0
|
作者：
Eom, Joo Beom [1 ]
Min, Eun Jung [2 ]
Lee, Byeong Ha [2 ]
机构：
[1] Korea Photon Technol Inst, 5 Cheomdan 4 Gil, Kwangju 500770, South Korea
[2] GIST, Sch Informat & Commun, Gwanju 500712, South Korea
来源：
BIOPHOTONICS: PHOTONIC SOLUTIONS FOR BETTER HEALTH CARE III | 2012年 / 8427卷
关键词：
Wide band optical coupler; Planar lightwave circuit (PLC); OCT;
D O I：
10.1117/12.922157
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
We report the development and performance of high resolution spectral domain optical coherence tomography (SD-OCT) system based on 2x2 planar lightwave circuit (PLC) splitter that was designed as a single mode splitter at near infrared and used as the beam splitter for a SD-OCT system. The splitter has been made by coupling SMFs to a planar lightwave circuit (PLC) splitter chip. The PLC splitter chip was fabricated to have a single mode property with 740 nm cutoff wavelength and the SMFs, which have 730 nm cutoff wavelength, were securely connected to the PLC chip through fiber block arrays having lithographically fabricated V grooves. With the implemented PLC splitter, we have obtained a low excess loss of 0.4 dB at 840 nm with wide band coupling property. With the proposed 2x2 PLC splitter and fabricated WDM coupler, SD-OCT images of samples successfully obtained by using combined source with 840 nm and 880 nm SLDs
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页数：6
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