We propose and demonstrate an all-optical tunable polymer bottle micro-resonator fabricated by droplet dispensing method. A microfiber is used to excite whispering gallery mode (WGM) of the micro-resonator. Continuous wave (CW) laser is employed as pump light to tune the WGM. To illustrate tuning performance of the fabricated device, external and internal pump light methods are both employed. For external pump light method, the tuning efficiency is about 5.23 pm/mW. For internal pump light, tuning efficiency of 68.3 pm/mW is obtained. The experimental results reveal that the bottle micro-resonator (BMR) can achieve wavelength tuning more than one free spectral range (FSR), which indicates the WGM can be tuned within a transparent window covered the full wavelength range. In addition, the fabricated device has advantages of high tuning efficiency, small size, easy fabrication, and extremely low cost.

中文翻译：

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聚合物瓶微谐振器中的全光可调耳语画廊模式

我们提出并演示了一种通过液滴分配法制造的全光可调聚合物瓶微谐振器。使用微纤维来激发微谐振器的回音壁模式（WGM）。连续波（CW）激光器用作泵浦光来调谐WGM。为了说明所制造设备的调谐性能，同时采用了内部和外部泵浦光方法。对于外部泵浦光方法，调谐效率约为5.23 pm / mW。对于内部泵浦光，可获得68.3 pm / mW的调谐效率。实验结果表明，瓶子微谐振器（BMR）可以实现超过一个自由光谱范围（FSR）的波长调谐，这表明WGM可以在覆盖整个波长范围的透明窗口内进行调谐。另外，所制造的装置具有调谐效率高的优点，