ABSTRACT
Self-organized lightwave network (SOLNET) [1-9] is a novel optical
waveguide formation method, which utilizes an attractive force
induced between light beams in photo-induced refractive index
increase (PRI) materials. SOLNET, which is one of the core tech-
nologies in optical electronics, realizes self-aligned optical couplings
between optical devices, tolerating the mutual positional misalign-
ment. SOLNET can also form straight and even downtapered optical
waveguides in a free space, enabling 3-D optical wiring.