分別采用丙烯酸類聚合物與硅樹脂材料實現了長周期光纖光柵(L PFG) 的大范圍波長調
諧與溫度補償. 當溫度從0～ 100 °C變化時, 對于表面涂覆丙烯酸類聚合物的L PFG, 波長調諧范圍增大至60 nm; 而對于涂覆硅樹脂的L PFG, 同樣的溫度變化波長漂移則被抑制在0. 6 nm 之內. 前者提供一種大范圍波長調諧帶阻濾波器或高靈敏度溫度傳感器的思路; 后者可考慮進一步改進后用作經溫度補償的濾波器、波分解復用器或應變傳感器.
關鍵詞: 長周期光纖光柵; 波長調諧; 溫度補償; 丙烯酸類聚合物; 硅樹脂
Abs tra c t: Bo th acrylate2based po lym er and silicone resin w ere p ropo sed as recoat ing m aterials fo r b road2 band w avelength tun ing and temperatu re compen sat ion of L PFG. The range of w avelength sh if t as m uch as 60 nm is expected fo r the L PFG recoated w ith acrylate2based po lym er w hen temperatu re changes f rom 0～ 100°C. How ever, fo r that recoated w ith silicone resin, the temperatu re sen sit ivity is supp ressed w ith abou t 0. 6 nm of the m ax ium w avelength sh if t w ith the sam e temperatu re variat ion. The fo rm er is po ten2 t ially a b roadband tunab le band reject ion f ilter o r temperatu re sen so r w ith enhanced sen sit ivity. W h ile the lat ter cou ld be modif ied as a temperatu re in sen sit ive f ilter, dem u lt ip lexer o r stain sen so r.
Ke y w o rds: long period f iber grat ing; w avelength tun ing; temperatu re compen sat ion; acrylate2based po ly2 m er; silicone resin