A whispering-gallery mode microsphere resonator based on optical fiber with an open microcavity is demonstrated, which is created by use of femtosecond laser micromachining and fusion splicing techniques. When a microsphere is placed into the open microcavity, whispering-gallery mode can be excited through evanescent field coupling. The device can be constructed in either single-mode fiber or multimode fiber, with the insertion loss of ∼13.2 and ∼21.0 dB, and the quality factor of 4.81X10 ³ and 2 X10 ⁵ respectively. Because of its features of compact structure, low cost, easy fabrication, convenient operation and high durability, the device is expected to have many photonics applications.

中文翻译：

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一种基于开放微腔光纤的回音廊模式微球谐振器

展示了一种基于具有开放微腔的光纤的回音壁模式微球谐振器，该谐振器是通过使用飞秒激光微加工和熔接技术创建的。当微球被放入开放的微腔时，回音壁模式可以通过渐逝场耦合激发。该器件可以用单模光纤或多模光纤构建，插入损耗分别为~13.2 和~21.0 dB，品质因数分别为4.81X10 ³和2 X10 ⁵。该器件具有结构紧凑、成本低、制造容易、操作方便、耐用性高等特点，有望在光子学领域得到广泛应用。