Optically-modulated MEMS Scanning Endoscope for Optical Coherence Tomography
نویسندگان
چکیده
This paper presents a novel configuration of a MEMS scanning endoscope that is actuated by external optical modulation. Light at a wavelength in the 1550nm range is used to modulate a scanning MEMS mirror, and wavelength of 1310nm, commonly used for optical coherence tomography (OCT), is used for the probe beam. This novel approach provides for the operation of a scanning endoscope without the need for directly powering up the scanning element, in this way a less hazardous apparatus for in-vivo diagnosis is possible. A fabricated module is demonstrated in which a MEMS mirror scans at the resonant frequency of 350Hz generating a optical scanning angle of 8degrees. ©2006 Optical Society of America OCIS codes: 230.3990 Microstructure devices, 230.5160 Photodetectors, 110.4500 Optical Coherence Tomography, 170.2150 Endoscopic imaging
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