Electrically tuned whispering gallery modes microresonator based on microstructured optical fibers infiltrated with dual-frequency liquid crystals

Nanophotonics

article

Chengkun Yang¹  Hao Zhang¹  Bo Liu¹  Haifeng Liu¹  Chao Wang²  Shiwei Lin¹ 

[1] Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Institute of Modern Optics, Nankai University;School of Engineering and Digital Arts, University of Kent, United Kingdom

关键词: liquid crystal;    microstructured optical fiber (MOF);    optical microresonator;    whispering gallery mode (WGM);   

DOI  :  10.1515/nanoph-2018-0042

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

An electrically tunable whispering gallery mode (WGM) microresonator based on an HF-etched microstructured optical fiber (MOF) infiltrated with dual-frequency liquid crystals (DFLCs) is proposed and experimentally demonstrated for the investigation of the crossover frequency and Freedericksz transition of DFLCs. Experimental results indicate that for applied electric field with operation frequency below the crossover frequency, WGM resonance wavelength decreases with the increment of applied electric field strength. On the contrary, for applied electric field with operation frequency beyond the crossover frequency, WGM resonance dips show red shift as the applied electric field intensity increases. The proposed electrically tunable microcavity integrated with DFLCs is anticipated to find potential applications in optical filtering, all-optical switching, and electrically manipulated bi-directional micro-optics devices.

【 授权许可】

CC BY