InP semiconductor optical amplifier Religious architecture bifurcations chaos chaos synchronization chaotic communication chaotic laser diode churches communication system security coupled lasers coupled modes delay dual-wavelength laser dynamics and stability equivalent circuit modeling excited-state external-cavity diode laser feedback heritage high-speed VCSELs hybrid integration hybrid photonic integration injection locking integrated lasers integrated photonic circuits intensity dynamics interference filter intra-cavity propagation delay intrinsic laser dynamics intrinsic modulation response