Title :
Long-period fiber gratings as band-rejection filters
Author :
Vengsarkar, Ashish M. ; Lemaire, Paul J. ; Judkins, Justin B. ; Bhatia, Vikram ; Erdogan, Turan ; Sipe, John E.
Author_Institution :
Dept. of Electr. Eng., Arizona Univ., Tucson, AZ, USA
fDate :
1/1/1996 12:00:00 AM
Abstract :
We present a new class of long-period fiber gratings that can be used as in-fiber, low-loss, band-rejection filters. Photoinduced periodic structures written in the core of standard communication-grade fibers couple light from the fundamental guided mode to forward propagating cladding modes and act as spectrally selective loss elements with insertion losses act as backreflections <-80 dB, polarization-mode-dispersions <0.01 ps and polarization-dependent-losses <0.02 dB
Keywords :
band-stop filters; diffraction gratings; optical communication equipment; optical fibre cladding; optical fibre dispersion; optical fibre filters; optical fibre losses; optical fibre polarisation; 0.01 ps; 0.02 dB; 0.2 dB; backreflections; band-rejection filters; forward propagating cladding modes; fundamental guided mode; in-fiber low-loss band-rejection filters; insertion losses; long-period fiber gratings; photoinduced periodic structures; polarization-dependent-losses; polarization-mode-dispersions; spectrally selective loss elements; standard communication-grade fibers; Communication standards; Fiber gratings; Filters; Insertion loss; Optical coupling; Optical fiber communication; Optical fiber polarization; Optical propagation; Periodic structures; Propagation losses;
Journal_Title :
Lightwave Technology, Journal of
