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Six-mode scrambler based on cascaded side-wall grating waveguides
Japanese Journal of Applied Physics ( IF 1.5 ) Pub Date : 2021-05-19 , DOI: 10.35848/1347-4065/abfa31
Takeshi Fujisawa 1 , Taiji Sakamoto 2 , Masashi Miyata 3 , Takashi Matsui 2 , Toshikazu Hashimoto 3 , Ryoichi Kasahara 3 , Takayoshi Mori 2 , Ryota Imada 2 , Kazuhide Nakajima 2 , Kunimasa Saitoh 1
Affiliation  

A six-mode scrambler based on cascaded side-wall long-period-grating waveguides on a silica planar lightwave circuit (PLC) platform is proposed for mode-division-multiplexing (MDM) transmission. The device can be fabricated with only one-step etching since it does not use a surface grating. A mode-dependent loss (MDL) of the system is estimated and the MDL can be reduced with a multiple scrambling operation. Two gratings proposed here and a fiber-pigtailed module containing these gratings are fabricated and the expected proof-of-concept mode scrambling operation is confirmed. It is found that the connection between few-mode fiber (FMF) and PLC chip seems to be the dominant loss of the module. Considering these losses, the measured results are in good agreement with the calculated results.



中文翻译:

基于级联侧壁光栅波导的六模扰频器

提出了一种基于二氧化硅平面光波电路 (PLC) 平台上级联侧壁长周期光栅波导的六模加扰器,用于模分复用 (MDM) 传输。由于该器件不使用表面光栅,因此只需一步蚀刻即可制造。估计系统的模式相关损耗 (MDL),并且可以通过多次加扰操作来减少 MDL。这里提出的两个光栅和包含这些光栅的光纤尾纤模块被制造出来,并确认了预期的概念验证模式加扰操作。发现少模光纤(FMF)和PLC芯片之间的连接似乎是模块的主要损耗。考虑到这些损失,实测结果与计算结果非常吻合。

更新日期:2021-05-19
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