電子情報通信学会総合大会講演要旨
C-3-62
Flat-top band-rejection filter based on helical long-period fiber grating
○Peng Wang・Gen Inoue・Hongpu Li(Shizuoka Univ.)
A simple and robust method enabling to fabricate Helical LPG with a flat-top rejection-band has been proposed and experimentally demonstrated by using CO2 laser. The bandwidth measured @1 dB and @ 3 dB are ~15 and ~25 nm, respectively.