All-fiber optic confocal microscope with submicron depth resolution

P. Nath; M. Buragohain; S. Sarkar; P. Datta; K. C. Sarma

doi:10.1117/12.810248

20 February 2009 All-fiber optic confocal microscope with submicron depth resolution

P. Nath, M. Buragohain, S. Sarkar, P. Datta, K. C. Sarma

Proceedings Volume 7173, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications IX; 717308 (2009) https://doi.org/10.1117/12.810248
Event: SPIE BiOS, 2009, San Jose, California, United States

Abstract

In the present work an all-fiber optic confocal microscope with submicron depth resolution is reported. The operation of the microscope is based on the principle of back reflectance of propagated light from the target in a curve-shaped step-index multimode optical fiber. Modulation of the back-reflected light with axial displacement of the target is monitored using a photodiode (PD). The advantage of the system is its simplicity and possibility of remote monitoring. An axial displacement of minimum 0.5 μm can be detected within the focusing depth with the present work.

Citation Download Citation

P. Nath, M. Buragohain, S. Sarkar, P. Datta, and K. C. Sarma "All-fiber optic confocal microscope with submicron depth resolution", Proc. SPIE 7173, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications IX, 717308 (20 February 2009); https://doi.org/10.1117/12.810248

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