Highly efficient spectrally encoded imaging using a 45° tilted fiber grating

Guoqing Wang, Chao Wang, Zhijun Yan, Lin Zhang
<span title="2016-05-16">2016</span> <i title="The Optical Society"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/tjz57sbghnbv7oxjartzii6rwu" style="color: black;">Optics Letters</a> </i> &nbsp;
A novel highly efficient, fiber-compatible spectrally encoded imaging (SEI) system using a 45° tilted fiber grating (TFG) is proposed and experimentally demonstrated for the first time. The TFG serves as an infiber lateral diffraction element, eliminating the need for bulky and lossy free-space diffraction gratings in conventional SEI systems. Under proper polarization control, due to the strong tilted reflection, the 45° TFG offers a diffraction efficiency as high as 93.5%. Our new design
more &raquo; ... ficantly reduces the volume of the SEI system, improves energy efficiency and system stability. As a proof-of-principle experiment, spectrally encoded imaging of a customer-designed sample (9.6 mm × 3.0 mm) using the TFG-based system is demonstrated. The lateral resolution of the SEI system is measured to be 42 m in our experiment
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1364/ol.41.002398">doi:10.1364/ol.41.002398</a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pubmed/27244373">pmid:27244373</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/4orlq2qmhfhw5gx6o3ewh57eyy">fatcat:4orlq2qmhfhw5gx6o3ewh57eyy</a> </span>
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