INTEGRATED OPTICS 2067 n n2 n3 Fig.7-Junction type hybrid. REFLECTORS C fb:fc fa.fo.fe Fig.8-Channel dropping filter.INTEGRATED OFnCS 2067 Fig. 7 — Junction type hybrid. 1 1 L V . _ 1 1 1 1 1 1 "111 1 1 1 REFLECTORS^ J 1 ] c, \ \ i W 1 i ' ' U n = \ \ \ N. ii 1 1 1 1 1 1 - C a \ ~ — 1 1 1 1 Fig. 8 — Channel dropping filter