Insertion loss of 5.6 dB and finesse greater than 2000 within a 40 nm tuning range are demonstrated in a wavelength-locked, two-stage fibre Fabry-Perot filter capable of separating 1000 channels in an erbium-doped fibre amplifier spectrum.
Published in:
Electronics Letters
(Volume:28
,
Issue:
3
)
Date of Publication: 30 Jan. 1992