Title :
Novel all-fiber bandpass filter based on hollow optical fiber
Author :
Choi, S. ; Eom, T.J. ; Yu, J.W. ; Lee, B.H. ; Oh, K.
Author_Institution :
Dept. of Inf. & Commun., Kwangju Inst. of Sci. & Technol., South Korea
Abstract :
We report an in-line all-fiber bandpass filter based on a hollow optical fiber (HOF) core mode blocker along with a long-period fiber grating (LPG) pair. It is theoretically and experimentally confirmed that selective core mode blocking at the HOF region located in the middle of the LPG pair could provide efficient passband channels corresponding to the resonant wavelengths of the LPGs. The filter characteristics in passbands and the nearfield patterns of guided modes in the proposed device are discussed.
Keywords :
band-pass filters; diffraction gratings; optical communication equipment; optical fibre filters; WDM optical communication systems; all-fiber bandpass filter; guided mode nearfield patterns; hollow optical fiber; hollow optical fiber core mode blocker; long-period fiber grating pair; passband channels; resonant wavelengths; selective core mode blocking; Band pass filters; Fiber gratings; Optical devices; Optical fiber communication; Optical fiber devices; Optical fiber filters; Optical fibers; Optical filters; Optical scattering; Passband;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.804658
