Title :
All-fiber tunable comb filter with nonreciprocal transmission
Author :
Hwang, In Kag ; Yun, Seok Hyun ; Kim, Byoung Yoon
Author_Institution :
Dept. of Phys., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea
Abstract :
We demonstrate an all-fiber nonreciprocal comb filter by using two acoustooptic frequency shifters and a two-mode fiber interferometer. The transmission spectra for two opposite optical propagation directions are both periodic functions of optical wavelength, but different in transmission peak wavelengths. Methods for controlling the spacing and position of the transmission peak wavelengths are demonstrated.
Keywords :
acousto-optical filters; fibre optic sensors; light interferometers; optical communication equipment; optical fibre filters; optical frequency conversion; tuning; acoustooptic frequency shifters; all-fiber nonreciprocal comb filter; all-fiber tunable comb filter; nonreciprocal transmission; opposite optical propagation directions; optical wavelength; periodic functions; transmission peak wavelengths; transmission spectra; two-mode fiber interferometer; Frequency; Optical devices; Optical fiber communication; Optical fiber devices; Optical fiber filters; Optical filters; Optical interferometry; Optical propagation; Optical refraction; Optical variables control;
Journal_Title :
Photonics Technology Letters, IEEE
