Hybrid optical fiber add-drop filter based on wavelength dependent light coupling between micro/nano fiber ring and side-polished fiber

Abstract

In this paper, we report our experimental study on directly coupling a micro/nano fiber (MNOF) ring with a side-polished fiber(SPF). As a result of the study, the behavior of an add-drop filter was observed. The demonstrated add-drop filter explored the wavelength dependence of light coupling between a MNOF ring and a SPF. The characteristics of the filter and its performance dependence on the MNOF ring diameter were investigated experimentally. The investigation resulted in an empirically obtained ring diameter that showed relatively good filter performance. Since light coupling between a (MNOF) and a conventional single mode fiber has remained a challenge in the photonic integration community, the present study may provide an alternative way to couple light between a MNOF device and a conventional single mode fiber based device or system. The hybridization approach that uses a SPF as a platform to integrate a MNOF device may enable the realization of other all-fiber optical hybrid devices.

Cascaded Microbottle Resonator and Its Application in Add–Drop Filter

“…Furthermore, a stable ADF based on the cascaded microbottle resonator was presented, and the effective excitation of modes in WGM microresonators was demonstrated for the first time through the mode drop efficiency distribution. The add-drop filter presented here shows better performance compared with the filters based on fibers [25], [26]. For example, the Q factor of cascaded microbottle filter could be reach 10 6 , which is hundreds of that based on fiber, and higher Q factor represents the higher add or drop wavelength resolution.…”

Add-Drop Filter Based on Wavelength-Dependent Light Interlink between Lithium-Niobate Microwaveguide Chip and Microfiber Knot Ring

“…Firstly, the MKR with its ring diameter of~1339.0 µm was obtained by using the flame-heated taper-drawing technique and the knot formation technique [15]. To investigate the characteristics of the add-drop filter and its optical performance dependence on the MKR diameter, we decreased the diameter of the MKR step by step through moving the translation stages.…”

“…The diameters of the microfiber knot ring were, respectively, ~1339.0 μm (Figure 2a), ~1274.7 μm (Figure 2b), ~1209.3 μm (Figure 2c) and ~1147.7 μm (Figure 2d). When the transmitted light satisfied the constructive interference condition, it oscillated to reach its maximum optical power in the MKR [12,15]. However, the non-resonant light would transmit through the MKR with relatively low loss.…”

“…At the same time, a variety of MNOF-ring resonators have been reported since their tight light confinement and high quality factor [8][9][10][11][12][13] in optical micro-/nano-devices. Previously, the performance of all fiber add-drop filters made from MNOF-rings was successfully demonstrated [14,15]. The all-fiber add-drop filter has lots of advantages, such as easy connection to the optical fiber communication systems, compact size, simple fabrication and low cost.…”

Accurate measurement of nanomechanical motion in a fiber-taper nano-optomechanical system

“…6 Micro-/nanofiber (MNF) has advantages such as nanosize, excellent flexibility, and strong evanescent field. 7 The MNF has been used in the research of fundamental physical problems, 8 such as the Abraham-Minkowski dilemma [9][10][11][12] and the application of an optical force. 13 In previous research, the light-driven mechanical motion of MNF was phenomenally observed by microscopy but could not be measured accurately and quantitatively.…”