TY - JOUR
T1 - Phase retrieval in multicore fiber bundles
AU - Kogan, Dani
AU - Sivankutty, Siddharth
AU - Tsvirkun, Viktor
AU - Bouwmans, Geraud
AU - Andresen, Esben Ravn
AU - Rigneault, Herve
AU - Oron, Dan
N1 - Agence Nationale de la Recherche (ANR) [10-INSB-04-01, 11-INSB-0006, ANR-11-EQPX-0017, ANR-14-CE17-0004-01, ANR-11-IDEX-0001-02]; Institut National de la Sante et de la Recherche Medicale (Inserm) [PC201508]; SATT Sud-Est (GDC lensless endoscope); Region Nord-Pas-de Calais (CPER P4S); Centre National de la Recherche Scientifique (CNRS)-Weizmann NaBi International Laboratory; Crown Center of Photonics
PY - 2017/2
Y1 - 2017/2
N2 - Multicore fiber bundles are widely used in endoscopy due to their miniature size and their direct imaging capabilities. They have recently been used, in combination with spatial light modulators, in various realizations of endoscopy with little or no optics at the distal end. These schemes require characterization of the relative phase offsets between the different cores, typically done using off-axis holography, thus requiring both an interferometric setup and, typically, access to the distal tip. Here we explore the possibility of employing phase retrieval to extract the necessary phase information. We show that in the noise-free case, disordered fiber bundles are superior for phase retrieval over their periodic counterparts, and demonstrate experimentally accurate retrieval of phase information for up to 10 simultaneously illuminated cores. Thus, phase retrieval is presented as a viable alternative for real-timemonitoring of phase distortions in multicore fiber bundles. (C) 2017 Optical Society of America
AB - Multicore fiber bundles are widely used in endoscopy due to their miniature size and their direct imaging capabilities. They have recently been used, in combination with spatial light modulators, in various realizations of endoscopy with little or no optics at the distal end. These schemes require characterization of the relative phase offsets between the different cores, typically done using off-axis holography, thus requiring both an interferometric setup and, typically, access to the distal tip. Here we explore the possibility of employing phase retrieval to extract the necessary phase information. We show that in the noise-free case, disordered fiber bundles are superior for phase retrieval over their periodic counterparts, and demonstrate experimentally accurate retrieval of phase information for up to 10 simultaneously illuminated cores. Thus, phase retrieval is presented as a viable alternative for real-timemonitoring of phase distortions in multicore fiber bundles. (C) 2017 Optical Society of America
U2 - https://doi.org/10.1364/OL.42.000647
DO - https://doi.org/10.1364/OL.42.000647
M3 - مقالة
SN - 0146-9592
VL - 42
SP - 647
EP - 650
JO - Optics Letters
JF - Optics Letters
IS - 3
ER -