OPTICAL MODULATOR AND OPTICAL TRANSMISSION DEVICE USING THE SAME
First Claim
1. An optical modulator, comprising:
- an optical waveguide substrate in which an optical waveguide is formed;
a control electrode, provided on the optical waveguide substrate and applying an electric field to the optical waveguide; and
a relay substrate, disposed in the vicinity of the optical waveguide substrate and including electrical wirings for relaying electrical signals from an outside to the control electrode,wherein the control electrode includes a signal electrode,the optical modulator comprises terminating units that include terminal resistors that terminate the signal electrode, andat least a part of the terminating units are provided on the relay substrate.
1 Assignment
0 Petitions
Accused Products
Abstract
A small and inexpensive optical modulator having suppressed temperature drift and high reliability and an optical transmission device using the same are provided. The optical modulator includes an optical waveguide substrate where an optical waveguide is formed; a control electrode that is provided on the optical waveguide substrate and applies an electric field to the optical waveguide; and a relay substrate that is disposed in the vicinity of the optical waveguide substrate and includes electrical wirings that relay electrical signals from the outside to the control electrode. The control electrode includes a signal electrode. The optical modulator comprises terminating units that include terminal resistors that terminate the signal electrode. At least a part of the terminating units are provided on the relay substrate.
-
Citations
14 Claims
-
1. An optical modulator, comprising:
-
an optical waveguide substrate in which an optical waveguide is formed; a control electrode, provided on the optical waveguide substrate and applying an electric field to the optical waveguide; and a relay substrate, disposed in the vicinity of the optical waveguide substrate and including electrical wirings for relaying electrical signals from an outside to the control electrode, wherein the control electrode includes a signal electrode, the optical modulator comprises terminating units that include terminal resistors that terminate the signal electrode, and at least a part of the terminating units are provided on the relay substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
Specification