Electro-optic branching-waveguide switch with low drive voltage.
Both experimental and theoretical results of a low-voltage-driven optical branching-waveguide switch in Z-cut LiNbO(3) are presented. In a 10-microm-wide single-mode branching-waveguide switch for lambda(0) = 0.6328 microm, the 10-dB extinction ratio was obtained at a drive voltage as low as +/-6.5 V, although +/-40 V was required in a 4-microm-wide switch. The scattering loss of the guided mode at the branching point was evaluated to be 1.3 dB.
Haruna
M
M
Hibi
T
T
Koyama
J
J