用于天文光子学的121波导扇出的超快Laser写入
Ultrafast Laser Inscription of a 121-Waveguide Fan-Out for Astrophotonics
摘要：
利用超快激光刻写，我们报道了一个原型的三维121波导扇出器件的制造，能够重新格式化的120芯多芯光纤（MCF）的输出到一维线性阵列。当与实际MCF结合使用时，我们证明了使用此原型的重新格式化功能将导致约7.0 dB的整体吞吐量损失。然而，如果可以实现从MCF到扇出的完美耦合，则重新格式化功能将导致仅约1.7 dB的总损耗。随着足够的发展，类似的设备可以有效地重新格式化使用高度多芯光纤制造的所谓“光子灯笼”的输出。
英文摘要：
Using ultrafast laser inscription, we report the fabrication of a prototype three-dimensional 121-waveguide fan-out device capable of reformatting the output of a 120 core multicore fiber (MCF) into a one-dimensional linear array. When used in conjunction with an actual MCF, we demonstrate that the reformatting function using this prototype would result in an overall throughput loss of approximately 7.0 dB. However, if perfect coupling from the MCF into the fan-out could be achieved, the reformatting function would result in an overall loss of only approximately 1.7 dB. With adequate development, similar devices could efficiently reformat the output of so-called "photonic lanterns" fabricated using highly multicore fibers.
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