OAM-mode coupling by segmented helical-ring-core waveguides inscribed with a femtosecond laser beam

被引：0
|
作者：
Likhov, Vladislav [1 ,2 ]
Vasiliev, Sergei [1 ]
Alagashev, Grigory [1 ]
Okhrimchuk, Andrey [1 ]
机构：
[1] Russian Acad Sci, Dianov Fiber Opt Res Ctr, Prokhorov Gen Phys Inst, 38 Vavilova Str, Moscow, Russia
[2] Mendeleev Univ Chem Technol Russia, 9 Miusskaya Str, Moscow, Russia
来源：
OPTICS LETTERS | 2024年 / 49卷 / 05期
基金：
俄罗斯科学基金会;
关键词：
Femtosecond lasers;
D O I：
10.1364/OL.515710
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Azimuthally segmented helical -ring -core waveguides (HRCWs) were fabricated in silica glass by direct laser writing. Triplesegmented waveguides provided single -mode or few -mode light guidance depending on the core diameter. Bragg resonance reflection of the light carrying orbital angular momentum (OAM) was registered confirming the generalized angular phase -matching condition, which considers the azimuthally segmented structure of the waveguides. (c) 2024 Optica Publishing Group
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页码：1217 / 1220
页数：4
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