Research On The Switch Characteristics Of Liquid Crystal Photonic Crystal Fibers

Photonic crystal fiber is a new type of microstructure fibers,cross-section of air holesarranged periodically. Changing these air holes,the location and the size of the hole spacing,photonic crystal fiber has changed dramatically. Filling some of the holes in the claddingmaterial-These materials are typically external factors such as temperature, electric fieldchanges the refractive index and other sensitive-the ability to affect the light passing throughthe photonic crystal fiber, the mode field such as the effective area, the effective refractiveindex and limiting wear and tear. Due to the high sensitivity of the LCD, in biochemistry,temperature and environmental monitoring is widely used.FBG has a very narrow line width, low insertion loss, anti-magnetic interferencecapability, high sensitivity, ease of wavelength division multiplexing and other strengths, iswidely used in fiber lasers, optical communication and optical fiber sensing and other areas.FBG line width, low insertion loss, anti-electromagnetic interference, high sensitivity, ease ofwavelength division multiplexing, are widely used in fiber lasers, optical communication andoptical fiber sensing and other areas. Application Characteristics of FBG based on the theoryin practice. Invention in the1790s photonic crystal fiber has good prospects devices, photoniccrystal fiber and other fiber splicing needs in practical applications, and therefore low lossphotonic crystal fiber splicing is an important direction of research is currently in fiberapplications fields. This paper carried out the following aspects of the problem:The first chapter introduces the photonic crystal fiber devices, features, and introducesthe concept of two different mechanisms photonic crystal fiber light guide and overview ofthe development in recent years.The second chapter describes the numerical methods photonic crystal fibers, such assoftware used herein COMSOL Multiphysies and Rsoft mainly finite element method and theplane wave expansion method, this chapter focuses on these two methods.The third chapter describes the effects of liquid crystal displays, find characteristics andclassification, as well as the electric field, temperature and other external factors on theLCD, and finally re-focus on the temperature of the crystal clear highlight effect.The fourth chapter describes the methods and applications written to the basiccharacteristics of photonic crystal fiber grating and grating.The fifth chapter analyzes the switching characteristics of a liquid crystal photoniccrystal fiber grating experiments. Chapter VI using numerical simulation methods to establish two terahertz switch modeland simulate the temperature and electric field control switching characteristics achieved.