Widefield lensless endoscopy with a multicore fiber
  We demonstrate pixelation-free real-time widefield endoscopic imaging through an aperiodic multicore fiber (MCF) without any distal opto-mechanical elements or proximal scanners. Exploiting the memory effect in MCFs the images in our system are directly obtained without any post-processing using a static wavefront correction obtained from a single calibration procedure. Our approach allows for video-rate 3D widefield imaging of incoherently illuminated objects with imaging speed not limited by the wavefront shaping device refresh rate. 
Viktor Tsvirkun, Siddharth Sivankutty, G\'eraud Bouwmans, Ori Katz,   Esben Ravn Andresen and Herv\'e Rigneault
physics.optics physics.bio-ph