Title :
Architecture of high-order all-fiber birefringent filters by the use of the Sagnac interferometer
Author :
Han, Yan ; Li, Qun ; Liu, Xiaoming ; Zhou, Bingkun
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
Several high-order all-fiber birefringent filters were built by using of Sagnac interferometer. These filters included the narrow bandpass filter, the narrow bandstop filter, the rectangular filter, and the triangular filter. All these filters can be changed into each other by adjusting only the wave plates inside the Sagnac loop. The corresponding architecture theory for these kinds of filters is proposed and verified in experiments.
Keywords :
band-pass filters; band-stop filters; birefringence; fibre optic sensors; light interferometers; optical fibre filters; Sagnac interferometer; Sagnac loop; architecture theory; high-order all-fiber birefringent filters; narrow bandpass filter; narrow bandstop filter; rectangular filter; triangular filter; wave plates; All-optical networks; Band pass filters; Birefringence; Filtering theory; Optical fiber couplers; Optical fiber filters; Optical filters; Optical retarders; Sagnac interferometers; Transfer functions;
Journal_Title :
Photonics Technology Letters, IEEE
