Low loss and high performance interconnection between standard single-mode fiber and antiresonant hollow-core fiber.
Low loss and high performance interconnection between standard single-mode fiber and antiresonant hollow-core fiber.
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DOI：
10.1038/s41598-021-88065-2
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发表时间：
2021-04-22
影响因子：
4.6
通讯作者：
Slavík R
中科院分区：
文献类型：
--
作者：
Suslov D;Komanec M;Numkam Fokoua ER;Dousek D;Zhong A;Zvánovec S;Bradley TD;Poletti F;Richardson DJ;Slavík R
我们证明了一个嵌套的反谐振无节点型空芯光纤（NANF）和标准的单模光纤（SMF）之间的互连的创纪录的低损耗减半。实现的互连损耗为0.15 dB，仅比理论预期的最小损耗高出0.07 dB。我们还优化了互连方面的不必要的交叉耦合到高阶模式的NANF。我们实现了低至−35 dB的LP模式（损耗最低的高阶模式，因此是最重要的消除模式）交叉耦合。借助模拟，我们表明，测得的LP模式耦合是最有可能的限制略有不完美的对称性制造的NANF。高损耗LP模式的耦合串扰（在我们的光纤中为dB/km）被测量为低于−22 dB。此外，我们的实验表明，应用到互连接口的抗反射涂层减少了0.15 dB的插入损耗，同时减少了在60 nm的带宽低于-40 dB的背反射。最后，我们还展示了一种替代的模场适配器，以适应SMF和NANF之间的模场大小，基于热膨胀芯光纤。这种方法使我们能够实现0.21 dB的互连损耗和-35 dB的LP模式交叉耦合。
We demonstrate halving the record-low loss of interconnection between a nested antiresonant nodeless type hollow-core fiber (NANF) and standard single-mode fiber (SMF). The achieved interconnection loss of 0.15 dB is only 0.07 dB above the theoretically-expected minimum loss. We also optimized the interconnection in terms of unwanted cross-coupling into the higher-order modes of the NANF. We achieved cross-coupling as low as −35 dB into the LP mode (the lowest-loss higher-order mode and thus the most important to eliminate). With the help of simulations, we show that the measured LP mode coupling is most likely limited by the slightly imperfect symmetry of the manufactured NANF. The coupling cross-talk into the highly-lossy LP mode ( dB/km in our fiber) was measured to be below −22 dB. Furthermore, we show experimentally that the anti-reflective coating applied to the interconnect interface reduces the insertion loss by 0.15 dB while simultaneously reducing the back-reflection below −40 dB over a 60 nm bandwidth. Finally, we also demonstrated an alternative mode-field adapter to adapt the mode-field size between SMF and NANF, based on thermally-expanded core fibers. This approach enabled us to achieve an interconnection loss of 0.21 dB and cross-coupling of −35 dB into the LP mode.
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影响因子：
3.8
作者：
Fokoua, Eric Numkam;Sandoghchi, Seyed Reza;Poletti, Francesco
通讯作者：
Poletti, Francesco
影响因子：
4.7
作者：
Kuschnerov, Maxim;Mangan, Brian J.;Yu, RangChen
通讯作者：
Yu, RangChen
影响因子：
4.7
作者：
Liu, Zhixin;Karanov, Boris;Bayvel, Polina
通讯作者：
Bayvel, Polina
影响因子：
16.6
作者：
Lisdat C;Grosche G;Quintin N;Shi C;Raupach SM;Grebing C;Nicolodi D;Stefani F;Al-Masoudi A;Dörscher S;Häfner S;Robyr JL;Chiodo N;Bilicki S;Bookjans E;Koczwara A;Koke S;Kuhl A;Wiotte F;Meynadier F;Camisard E;Abgrall M;Lours M;Legero T;Schnatz H;Sterr U;Denker H;Chardonnet C;Le Coq Y;Santarelli G;Amy-Klein A;Le Targat R;Lodewyck J;Lopez O;Pottie PE
通讯作者：
Pottie PE
影响因子：
3.8
作者：
Jung, Yongmin;Kim, Hyuntai;Richardson, David J.
通讯作者：
Richardson, David J.