Title :

Measurement and compensation of residual group delay in a multi-core fiber for lensless endoscopy

Author(s) :

Andresen, Esben [Auteur]
MOSAIC [MOSAIC]
Sivankutty, Siddharth [Auteur]
Bouwmans, Géraud [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Gallais, Laurent [Auteur]
ILM [ILM]
Monneret, Serge [Auteur]
MOSAIC [MOSAIC]
Rigneault, Hervé [Auteur]
MOSAIC [MOSAIC]

Journal title :

Journal of the Optical Society of America B

Pages :

1221-1228

Publisher :

Optical Society of America

Publication date :

2015-05-22

ISSN :

0740-3224

HAL domain(s) :

Sciences de l'ingénieur [physics]/Optique / photonique

English abstract : [en]

We present a new experimental concept suitable for partially compensating the inter-core group delay dispersion in a multi-core fiber (MCF). First we map out the group delays of all 169 single-mode cores of a MCF using ...
Show more >We present a new experimental concept suitable for partially compensating the inter-core group delay dispersion in a multi-core fiber (MCF). First we map out the group delays of all 169 single-mode cores of a MCF using phase-shifting spectral interferometry and find the group delays distributed with standard deviation 123 fs in a 30 cm long MCF. We then detail and apply the compensation scheme based on two wavefront shapers with which we narrow the group delay distribution to 65 fs. These results are relevant for lensless endoscopes employing femtosecond excitation, and we quantify the performance gain in a lensless endoscope with 150 fs laser pulses as excitation and discuss possible generalizations of the concept.Show less >

Language :

Anglais

Popular science :

Non

ANR Project :

Fibres optiques pour les hauts Flux
INITIATIVE D'EXCELLENCE AIX MARSEILLE UNIVERSITE
Centre Européen pour les Mathématiques, la Physique et leurs Interactions

Collections :

• Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM) - UMR 8523

Source :

Harvested from HAL