PMID- 25688338
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20201001
IS  - 2249-8958 (Print)
IS  - 2249-8958 (Electronic)
IS  - 2249-8958 (Linking)
VI  - 3
IP  - 2
DP  - 2013 Dec
TI  - Wavelength-Filter Based Spectral Calibrated Wave number - Linearization in 1.3 mm 
      Spectral Domain Optical Coherence.
PG  - 336-340
AB  - In this study, we demonstrate the enhanced spectral calibration method for 1.3 mum 
      spectral-domain optical coherence tomography (SD-OCT). The calibration method 
      using wavelength-filter simplifies the SD-OCT system, and also the axial 
      resolution and the entire speed of the OCT system can be dramatically improved as 
      well. An externally connected wavelength-filter is utilized to obtain the 
      information of the wavenumber and the pixel position. During the calibration 
      process the wavelength-filter is placed after a broadband source by connecting 
      through an optical circulator. The filtered spectrum with a narrow line width of 
      0.5 nm is detected by using a line-scan camera. The method does not require a 
      filter or a software recalibration algorithm for imaging as it simply resamples 
      the OCT signal from the detector array without employing rescaling or 
      interpolation methods. One of the main drawbacks of SD-OCT is the broadened point 
      spread functions (PSFs) with increasing imaging depth can be compensated by 
      increasing the wavenumber-linearization order. The sensitivity of our system was 
      measured at 99.8 dB at an imaging depth of 2.1 mm compared with the uncompensated 
      case.
FAU - Wijeisnghe, Ruchire Eranga Henry
AU  - Wijeisnghe RE
AD  - Department of Electronics Engineering, Kyungpook National university, Daegu, 
      South Korea.
FAU - Cho, Nam Hyun
AU  - Cho NH
AD  - Department of Electronics Engineering, Kyungpook National university, Daegu, 
      South Korea.
FAU - Park, Kibeom
AU  - Park K
AD  - Department of Electronics Engineering, Kyungpook National university, Daegu, 
      South Korea.
FAU - Shin, Yongseung
AU  - Shin Y
AD  - Department of Electronics Engineering, Kyungpook National university, Daegu, 
      South Korea.
FAU - Kim, Jeehyun
AU  - Kim J
AD  - Department of Electronics Engineering, Kyungpook National university, Daegu, 
      South Korea.
LA  - eng
GR  - R01 EB013723/EB/NIBIB NIH HHS/United States
PT  - Journal Article
PL  - India
TA  - Int J Eng Adv Technol
JT  - International journal of engineering and advanced technology
JID - 101634575
PMC - PMC4327876
MID - NIHMS595056
OTO - NOTNLM
OT  - SD-OCT
OT  - Wavelength-filter
OT  - wavenumber-linearization
EDAT- 2013/12/01 00:00
MHDA- 2013/12/01 00:01
PMCR- 2015/02/13
CRDT- 2015/02/18 06:00
PHST- 2015/02/18 06:00 [entrez]
PHST- 2013/12/01 00:00 [pubmed]
PHST- 2013/12/01 00:01 [medline]
PHST- 2015/02/13 00:00 [pmc-release]
PST - ppublish
SO  - Int J Eng Adv Technol. 2013 Dec;3(2):336-340.