Single-body lensed fiber probe actuated by magnetic force for spectral domain optical coherence tomography

Eun Jung Min; Jihoon Na; Seon Young Ryu; Byeong Ha Lee

doi:10.1117/12.808961

20 February 2009 Single-body lensed fiber probe actuated by magnetic force for spectral domain optical coherence tomography

Eun Jung Min, Jihoon Na, Seon Young Ryu, Byeong Ha Lee

Author Affiliations +

Proceedings Volume 7168, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XIII; 71682I (2009) https://doi.org/10.1117/12.808961
Event: SPIE BiOS, 2009, San Jose, California, United States

Abstract

We propose a fiber-based hand-held scanning probe suitable for the sample arm of spectral domain optical coherence tomography (SD-OCT). To achieve a compact and miniaturized probe, a single-body lensed-fiber, on which an iron-bead ferromagnetic material is loaded was fabricated and a solenoid actuator driven by readily available driving voltage (10 V) and current (120 mA) was utilized. A focusing lens was directly formed in a single-body onto the distal end of a fiber, which eliminated any complement optical components in front of a conventional sample probe and removes any optical alignment problem. By using the soft-iron solenoid actuator, the fiber in the probe is activated which gives the sample scanning for the OCT imaging. Moreover, the simple design of the solenoid allowed easy fabrication and a good practicality. With the implemented probe, OCT images of a pearl and a human finger tip were obtained at an imaging speed of 30 Hz and a scanning range of 4 mm.

Citation Download Citation

Eun Jung Min, Jihoon Na, Seon Young Ryu, and Byeong Ha Lee "Single-body lensed fiber probe actuated by magnetic force for spectral domain optical coherence tomography", Proc. SPIE 7168, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XIII, 71682I (20 February 2009); https://doi.org/10.1117/12.808961

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KEYWORDS

Optical coherence tomography

Magnetism

Actuators

Magnesium

Photography

Single mode fibers

Ferromagnetics

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