An electric field tunable switch with liquid crystal infiltrated photonic crystal fiber grating

Abstract

The nematic liquid crystal (NLC) infiltrated photonic crystal fiber (PCF) used as a switch modulated by electric field is demonstrated. The switch consists of the infiltrated solid core PCF into which Bragg gratings are written. It is confirmed that the switch can achieve an accurate operation through measuring the reflected light with the change of electric field intensity from 1.4 kVrms/mm to 2.1 kVrms/mm. When the electric field intensity exceeds the threshold, the change of only 0.01 kVrms/mm can cause the wavelength shift of 1 nm. It is approved that the switch with such a structure provides a high sensitivity. The reflection peak is stabilized at about 15 dB which is high enough to separate from the factors such as system noise and error, and it can improve the control precision.

Keywords

Fiber Bragg Grating / Nematic Liquid Crystal / Electric Field Intensity / Photonic Crystal Fiber / Reflection Peak

References

[1] LarsenT, BjarklevA, HermannD, BroengJ. Optics Express, 2003, 11: 2589

[2] SharpingJ E, FiorentinoM, KumarP, WindelerR S. IEEE Photonics Technology Letters, 2002, 14: 77

[3] NoordegraafD, ScolariL, LægsgaardJ, RindorfL, AlkeskjoldT T. Optics Express, 2007, 15: 7901

[4] KuhlmeyB T, WhiteT P, RenversezG, MaystreD, BottenL C, de SterkeC M, McPhedranR C. Journal of the Optical Society of America B, 2002, 19: 2331

[5] LvL, RenG-j, LiuB, YaoJ-q. Journal of Optoelectronics and Advanced Materials, 2011, 13: 755

[6] HuX-l, LiangD-k, WangY, FangT. Journal of Optoelectronics·Laser, 2013, 24: 1895

[7] SongM, HouS, ZhangB, LiS, LiuY. Infrared and Laser Engineering, 2013, 42: 1547

[8] WolinskiT R, SzaniawskaK, ErtmanS, LesiakP, DomanskiA W, DabrowskiR, Nowinowski-KruszelnickiE, WojcikJ. Measurement Science Technology, 2006, 17: 985

[9] TuQ, ZhangW, JinL, KaiG, YuanS, DongX. Laser & Optoelectronics Progress, 2005, 42: 42

[10] ScolariL, AlkeskjoldT T, RiishedeJ, BjarklevA, HermannD S, AnawatiA, NielsenM D, BassiP. Optics Express, 2005, 13: 7483

[11] HouS-l, HanJ-w, ZhangR-r, HuangY-q, ZhangX, RenX-m. Journal of Optoelectronics·Laser, 2010, 21: 5

[12] PassaroV M N, Dell’OlioF, De LeonardisF. Progress in Quantum Electronics, 2006, 30: 45

[13] XiaoL, DemokanM S, JinW, WangY, ZhaoC L. Journal of Lightwave Technology, 2007, 25: 3563

[14] SunG-d, ZhengJ-l, WangR, PuT, WeiZ-h, XiongJ-t, FangT. Journal of Optoelectronics·Laser, 2012, 23: 2249

[15] YangC, LuoF, WangL, HeJ. An Electroless Plating Approach for Depositing a Reflective Layer on the Surface of Optical FibersChinese Journal of Scientific Instrument, 1999, 408

This work has been supported by the National Basic Research Program of China (No.2010CB327801), and the China Postdoctoral Science Foundation Funded Project (No.20090460691).