分別采用丙烯酸類聚合物與硅樹脂材料實現(xiàn)了長周期光纖光柵(L PFG) 的大范圍波長調(diào)
諧與溫度補(bǔ)償. 當(dāng)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(diào)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(nèi). 前者提供一種大范圍波長調(diào)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(jìn)一步改進(jìn)后用作經(jīng)溫度補(bǔ)償?shù)臑V波器、波分解復(fù)用器或應(yīng)變傳感器.
關(guān)鍵詞: 長周期光纖光柵; 波長調(diào)諧; 溫度補(bǔ)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