OPTICAL MODULE, OPTICAL ADD/DROP APPARATUS, AND OPTICAL TRANSMISSION APPARATUS

摘要

An optical module 1 has a planar waveguide 2. The planar waveguide 2 is provided with an optical circuit for an optical switch 3 formed by 2 x 2 cross optical waveguides A1 to D1 and an optical circuit 4 for an optical variable attenuator formed by 2 x 2 cross optical waveguides A2 to D2. Joined onto the planar waveguide is an actuator structure 5 and the actuator structure is constituted by an actuator section 6 for an optical switch and an actuator section 7 for an optical variable attenuator. The optical circuit 3 of the planar waveguide 2 and the actuator section 6 constitute an optical switch 8 , whereas the optical circuit 4 of the planar waveguide 2 and the actuator section 7 constitute an optical variable attenuator 9.