Patent · US Active

Method for integration of variable Bragg grating coupling coefficients

US11664640B1 · kind B1 · utility

0Cited by

1References

14Claims

0Family size

Assignee

United States of America as represented by the Administrator of NASA · US

Inventors

Mark A. Stephen · Catonsville, US
Bowen Song · Midland School, US
Jonathan Klamkin · Boston, US
Victoria Marie Rosborough · Midland School, US
Joseph M. Fridlander · Midland School, US

Key dates

Filing date	Aug 5, 2021
Grant date	May 30, 2023
Priority date	—
Expiry date	Aug 14, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH01S5/34306
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A non-etched gap is introduced along the length of an integrated Bragg grating with etched grooves such that the coupling coefficient, K, of the grating is reduced by the non-etched gap. In this way, multiple grating K values may be defined within a photonic integrated circuit using a single lithography and etch step. Additionally, the non-etched gap width may be varied along the length of a single grating to implement a chirped grating.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.