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

Claim 7:
8. 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;
the second optical waveguide connected to the two first optical waveguides on the forward path side;
two first optical waveguides on a backward path side as the first optical waveguide connected to the second optical waveguide;
an electrode that applies to the two first optical waveguides on the forward path side and the two first optical waveguides on the backward path side;
a multiplexing unit that multiplexes the modulated light passing through the two first optical waveguides on the backward path side; and
an output unit that outputs the modulated light multiplexed by the multiplexing unit, wherein
at least a portion of a core of the second optical waveguide is
in the amorphous state, and
a core of the two first optical waveguides on the forward path side are
in the non-amorphous state.