Db. Kim et al., DESIGN OF NARROW BANDWIDTH GRATING-ASSISTED CODIRECTIONAL COUPLER FILTER AND COMPARISON TO THE EXPERIMENTAL RESULTS, IEEE photonics technology letters, 9(11), 1997, pp. 1505-1507
A simplified analysis is very important in the design and fabrication
of grating-assisted codirectional coupler (GACC) filter because extens
ive calculations are often required, This is mainly due to a large num
ber of unknown parameters and a very narrow tolerance of the design an
d fabrication, In this paper, we present a simple method to design an
InGaAsP-InP GACC filter having a very narrow bandwidth, The fabricated
device has been measured to have a center wavelength of 1530.6 nm and
a bandwidth of 1.5 nm, They are in agreement with calculations.