Limitation of Fabry-Perot filters consisting of superimposed chirped fiber Bragg gratings in terms of PDL and FSR variations are addressed. FSR uniformity of .+-.3 and low PDL were attained with finese up to 80.
Limitation of Fabry-Perot filters consisting of superimposed chirped fiber Bragg gratings in terms of PDL and FSR variations are addressed. FSR uniformity of .+-.3 and low PDL were attained with finese up to 80. (en)