Patent ID: 11936428
Assignee: FUJITSU OPTICAL COMPONENTS LIMITED
Field: Telecommunications (Electrical engineering)
Classification: CPC G  H | IPC H

Claim 5:
6. The optical device according to claim 1, further including:
an input unit that receives light;
a branching unit that branches the light from the input unit;
two first optical waveguides on a forward path side as the first optical waveguide branched at the branching unit;
an electrode that applies an electric signal to the two first optical waveguides on the forward path side;
a multiplexing unit connected to the two first optical waveguides on the forward path side to multiplex the light modulated by the two first optical waveguides on the forward path side according to the electric signal;
the second optical waveguide connected to the multiplexing unit to allow the modulated light multiplexed by the multiplexing unit to pass therethrough;
two first optical waveguides on a backward path side as the first optical waveguide connected to the second optical waveguide; and
an output unit that outputs the modulated light passing through the two first optical waveguides on the backward path side, wherein
at least a portion of a core of the second optical waveguide is
in the amorphous state, and
cores of the two first optical waveguides on the forward path side are
in a non-amorphous state.