Neuromorphic biophotonic sensor based on near infrared optical reflectometry

Jae Ho Han, Jin U. Kang

Research output: Contribution to journalArticle

Abstract

A biophotonic image sensor has been demonstrated by depositing a thin Au (gold) film on the single optical fiber by sputtering process to incorporate a self-contained reference plane, as well as to be sustainable for different contact interfacial medium. This side-viewing optical probe has been polished for 43°-49° angle in order to unilaterally reflect the beam to be focused with a micro dome-shape lens simply formed by high-energy melting process at the distal end of the standard single-mode fiber. The all fiber interferometric optics using a low (partial) coherence double-sided autocorrelator performing as a high-precision optical reflectometer at 1300 nm range noninvasively conducted a direct profiling of the depth information inside a biological tissue and for diagnosing brain tumors, as well as imaging subsurface depth profile for other turbid organic/inorganic samples. The optical probing imager, which normally operates in low power of 3 mW-7 mW has ∼ 35 dB signal-to-noise ratio (SNR) and a ∼ 15 μ m axial resolution (3-dB width of the reflected peak curve).

Original languageEnglish
Article number5659463
Pages (from-to)474-478
Number of pages5
JournalIEEE Sensors Journal
Volume12
Issue number3
DOIs
Publication statusPublished - 2012 Feb 20

Fingerprint

Image sensors
Infrared radiation
reflectometers
Reflectometers
sensors
Sensors
Domes
Single mode fibers
domes
Fiber optics
brain
Sputtering
Optical fibers
Tumors
fiber optics
Lenses
Brain
Signal to noise ratio
Melting
signal to noise ratios

Keywords

  • Biomedical measurements
  • biomedical transducers
  • image sensors
  • optical fiber devices
  • optical reflectometry

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Instrumentation

Cite this

Neuromorphic biophotonic sensor based on near infrared optical reflectometry. / Han, Jae Ho; Kang, Jin U.

In: IEEE Sensors Journal, Vol. 12, No. 3, 5659463, 20.02.2012, p. 474-478.

Research output: Contribution to journalArticle

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