Optical resonator apparatus, optical transmitter and controlling method for optical resonator

Abstract

An optical resonator apparatus includes an optical resonator unit wherein ring optical resonators each including a first optical waveguide and a resonance wavelength adjustment electrode are coupled in cascade connection and round-trip lengths of the ring optical waveguides are different from each other and vary in order from an input side to an output side, and a controller that adjusts a resonance wavelength of each ring optical resonator in order beginning with the ring optical resonator provided at the most input side so as to match with an input light wavelength and, when an inter-channel occurs, adjusts the resonance wavelength of the first ring optical resonator from the input side so as to match with a second-matching input light wavelength and adjusts the resonance wavelengths of the second and succeeding ring optical resonators from the input side so as to match with the first-matching input light wavelength.

Description

technical field [0001] Embodiments discussed herein relate to optical resonator devices, optical transmitters, and control methods for optical resonators. Background technique [0002] In recent years, attention has been drawn to optical functional devices on silicon substrates utilizing silicon electronic circuit fabrication techniques that can achieve large-scale integration at low cost. [0003] Furthermore, in high-performance servers, supercomputers, and the like, performance is enhanced by adopting a multi-core configuration or the like for a CPU (Central Processing Unit) so that required arithmetic operation performance can be enhanced. On the other hand, in communication between chips or boards, although the speed of arithmetic operation performance is increasing, communication with electrical signals reaches its limit due to the problem of physical distance. [0004] A large-scale optical communication device on a silicon substrate based on a low-loss and small-siz...

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Problems solved by technology

On the other hand, in communication between chips or boards, although the speed of arithmetic operation performance is increasing, communication with electrical signals reaches its limit due to the problem of physical distance

[0004] A large-scale optical communication device on a silicon substrate based on a low-loss and small-sized silicon narrow-line waveguide, i.e., silicon photonics, is expected as a technology for solving such a problem that its operation speed is increasing as described above. The lack of communication capabilities of information processing equipment

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