A novel fabrication of fiber Bragg grating in hollow-core fiber with HPDLCs

• 作 者: C.Hsu;L.Wang;W.Choi;
• 机 构: National Taiwan University,Taiwan
• 出 处: 2014年光子与光学工程国际会议暨西部光子学学术会议
• 发表日期: 2014年期

　　An electrically controllable fiber Bragg grating(FBG)for working in the communication band is demonstrated by utilizing holographic polymer-dispersed liquid crystal(HPDLCs).HPDLC is infiltrated in hollow-core fibers which are about 2μm and 5μm by means of capillarity.For the purpose of periodically separating polymer and liquid crystal to form an FBG,a two-beam interference system based on an argon laser(wavelength: 364nm)is used.To reduce coupling loss,we directly connect single-mode fibers(SMFs)to input and output ports.A maximum transmission loss dip of approximately 5-dB band rejection is obtained.After the cladding diameter is etched by buffered oxide etchant(BOE)solution to~12μm and a 150V external voltage is applied,a dip shift by~15nm is measured.