The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 07, 2026
Filed:
May. 25, 2020
Ntt, Inc., Tokyo, JP;
Yuta Ueda, Tokyo, JP;
Mitsuteru Ishikawa, Tokyo, JP;
NTT, Inc., Tokyo, JP;
Abstract
An oscillation wavelength adjustment type TLD for adjusting a control amount of a resonator length L, independently from physical property values of a waveguide material when a waveguide is used in the phase adjustment, without an external resonator structure in accordance with a MEMS technology employs a reflective phase adjuster including a multi-mode interference waveguide, which is optically coupled to an optical gain waveguide and has a configuration including one input port and five output ports, and a reflective delay line array connected to an output waveguide on a side of the five output ports of the multi-mode interference waveguide. Five reflective delay lines provided in the reflective delay line array are capable of adjusting the intensity of reciprocating light in accordance with a wavelength change of transmitted light.