Towards two-photon lensless endoscopes: Inter-core group delay compensation in a multi-core fiber

被引：3

作者：

Andresen, Esben Ravn ^{[1
]}

Sivankutty, Siddharth ^{[1
]}

Bouwmans, Geraud ^{[2
]}

Vainvinq, Olivier ^{[2
]}

Gallais, Laurent ^{[1
]}

Monneret, Serge ^{[1
]}

Rigneault, Herve ^{[1
]}

机构：

[1] Aix Marseille Univ, CNRS, Cent Marseille, Inst Fresnel UMR 7249, F-13013 Marseille, France

[2] Univ Lille 1, IRCICA, PhLAM CNRS, F-59658 Villeneuve Dascq, France

来源：

ADVANCED MICROSCOPY TECHNIQUES IV; AND NEUROPHOTONICS II | 2015年 / 9536卷

关键词：

Multi-core fiber; wave front shaping; dispersion; endoscopic imaging; fluorescence microscopy; nonlinear microscopy;

D O I：

10.1117/12.2183676

中图分类号：

TH742 [显微镜];

学科分类号：

摘要：

We map out the group delays of all the 169 single-mode cores of a 30 cm long multi-core fiber using phase-shifting spectral interferometry. We then present and apply a new experimental concept suitable for partially compensating the measured inter-core group delay dispersion. The compensation scheme is based on two wave front shapers in a 4-f geometry and group delays are imposed in the Fourier plane between them. These results are of relevance for cases where one desires to perform imaging through optical fibers using femtosecond excitation as is the case in the two-photon lensless endoscopes which have recently been demonstrated.

引用

页数：8

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