Patent · US Active

Tapered-grating single mode lasers and method of manufacturing

US11456573B2 · kind B2 · utility

0Cited by

11References

19Claims

0Family size

Assignee

CALIFORNIA INSTITUTE OF TECHNOLOGY · US

Inventors

Ryan M. Briggs · Pasadena, US
Clifford F. Frez · Pasadena, US
Mathieu Fradet · Pasadena, US

Key dates

Filing date	Oct 1, 2020
Grant date	Sep 27, 2022
Priority date	—
Expiry date	Oct 24, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH01S2301/163
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Single-mode distributed-feedback (DFB) lasers including single mode DFB waveguides with tapered grating structures are provided herein. Tapered grating structures provide for single mode DFB waveguides with predictable single mode operation. Uniform grating structures may provide for single mode operation, however DFB waveguides implementing uniform grating structures may operate at one of two single modes. Advantageously, DFB waveguides with tapered gratings operate with a spectrally narrow single mode at the same predictable single mode for all DFB waveguides with substantially identical specifications. Such predictability may lead to increased yield during manufacture of DFB waveguides with tapered gratings.

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