Japan, Feb. 24 -- NIHON LUMENTUM CO LTD has got intellectual property rights for 'ELECTRIC FIELD ABSORPTION TYPE MODULATOR.' Other related details are as follows:
Application Number: JP,2021-145938
Category (FI): G02F1/017,503
Stage: PROBLEM TO BE SOLVED: To provide an electronic field absorption modulator that is excellent in high-speed response property.SOLUTION: An electronic field absorption type modulator comprises: a substrate; a mesa structure that includes a first electric conduction type clad layer, multiple quantum well layer, and second electric conduction clad layer, which are provided in a first plane of the substrate; a first electric conduction type electrode that is electrically connected to the first electric conduction type clad layer; and a second electric conduction type electrode that is provided in a second plane of the substrate. The first electric conduction type electrode has: a mesa upper electrode that is arranged along a direction where the mesa structure extends; a pad electrode to which an electric signal is externally input; a drawing line electrode that connects between the mesa upper electrode and the pad electrode, in which the mesa structure includes: a light input terminal to which light is externally input; and a light output terminal that is on a side opposite the light input side. A connection position of a center position in a short-length direction of the drawing line electrode to the mesa upper electrode is close to a light output terminal side in a longitudinal direction of the mesa upper electrode, and the connection position is a position less than 50% from the light output terminal side with respect to a length in the longitudinal direction of the mesa upper electrode.SELECTED DRAWING: Figure 1 (Grant)
Filing Date: Sept. 8, 2021
Publication Date: Jan. 18, 2023
The original document can be viewed at: https://www.j-platpat.inpit.go.jp/p0100
Disclaimer: Curated by HT Syndication.
