Pubblicazione scientifica

An All-Fiber-Optic Combined System of Noncontact Photoacoustic Tomography and Optical Coherence Tomography

FILONE TECNOLOGICO	TEMA
economia circolare e sostenibilità

RIASSUNTO

We propose an all-fiber-based dual-modal imaging system that combines noncontact photoacoustic tomography (PAT) and optical coherence tomography (OCT). The PAT remotely measures photoacoustic (PA) signals with a 1550-nm laser on the surface of a sample by utilizing a fiber interferometer as an ultrasound detector. The fiber-based OCT, employing a swept-source laser centered at 1310 nm, shares the sample arm of the PAT system. The fiber-optic probe for the combined system was homemade with a lensed single-mode fiber (SMF) and a large-core multimode fiber (MMF). The compact and robust common probe is capable of obtaining both the PA and the OCT signals at the same position without any physical contact. Additionally, the MMF of the probe delivers the short pulses of a Nd:YAG laser to efficiently excite the PA signals. We experimentally demonstrate the feasibility of the proposed dual-modal system with a phantom made of a fishing line and a black polyethylene terephthalate fiber in a tissue mimicking solution. The all-fiber-optic system, capable of providing complementary information about absorption and scattering, has a promising potential in minimally invasive and endoscopic imaging.

DATA

Data di pubblicazione: 20/05/2016

AUTORI

EOM JONGHYUN
SHIN JUN GEUN
PARK SOONGHO
RIM SUNGHWAN
LEE BYEONG HA

ENTE DI AFFERENZA

DEPT MEDICAL SYS ENG INST INTEGRATED TECH GWANGJU INST SCIENCE & TECH
SCHOOL OF INFO & COMM GWANGJU INST SCIENCE & TECH

RIVISTA

Sensors (Basel, Switzerland), 16(5), 734

IMPACT FACTOR

3,510

indietro