Co-Generation of Orthogonal Soliton Pair in a Monolithic Fiber Resonator with Mechanical Tunability
Co-Generation of Orthogonal Soliton Pair in a Monolithic Fiber Resonator with Mechanical Tunability
复制标题
具有机械可调谐性的单片光纤谐振器中正交孤子对的联合生成
DOI：
10.1002/lpor.202200662
复制
发表时间：
2023
影响因子：
11
通讯作者：
Baicheng Yao
中科院分区：
文献类型：
--
作者：
Chenye Qin;Junting Du;Teng Tan;Bing Chang;Kunpeng Jia;Yupei Liang;Wenting Wang;Yanhong Guo;H;ing Xia;Shining Zhu;Yunjiang Rao;Zhenda Xie;Baicheng Yao
微谐振器中产生的孤子频率梳由于具有高的时频分辨率，为光学计量提供了强大的工具。在高Q单片光纤谐振腔中，通过激发腔内布里渊激光器，产生了一对正交的克尔孤子梳，由于孤子的捕获，这对克尔孤子梳具有相同的重复频率（frep = 1.001 GHz），但中心波长不同（frep = 9.278 GHz）。它们提供丰富的双梳状拍音，最小相位噪声低至−166.5 dBc Hz−1@1 MHz。由于单片光纤谐振腔的几何柔性，正交孤子对被发现是机械可控的高精度。具体而言，通过在微腔上施加范围为100 -7.33 mN的外部应力，它们的载波包络偏移频率之差（Δfceo）可以线性调谐，响应为0.3 kHz µN−1，同时，频率的可调谐性达到0.4 kHz µN−1。这种具有应力可控性的正交偏振双孤子结合了布里渊激励和参量振荡，可以为从频率可调光子微波源到高灵敏度陀螺仪的广泛应用提供微型全光纤工具。
Soliton frequency combs generated in microresonators offer powerful tools for optical metrology, due to the high time‐frequency resolution. Here, via exciting the intracavity Brillouin laser in a high Q monolithic fiber resonator, a pair of orthogonal Kerr soliton combs is generated, which share the same repetition (frep≈ 1.001 GHz) due to the soliton trapping but different central wavelengths (≈ 9.278 GHz). They offer rich dual‐comb beat notes with minimum phase noise down to −166.5 dBc Hz−1@1 MHz. Thanks to the geometric flexibility of the monolithic fiber resonator, the orthogonal soliton pair is found to be mechanically controllable with high precision. Specifically, by applying external stress on the microcavity in a range of ≈ 0–7.33 mN, the difference of their carrier‐envelope‐offset frequencies (Δfceo) is linearly tunable with a response of 0.3 kHz µN−1, meanwhile, tunability of thefrepreaches 0.4 kHz µN−1. Such an orthogonally polarized dual soliton with stress controllability combining Brillouin excitation and parametric oscillation can offer a miniature all‐in‐fiber tool for wide applications ranging from frequency‐adjustable photonic microwave sources to highly sensitive gyroscopes.