Broadband grating

US6081640A · kind A · utility

Assignees

• The University of Sydney · AU
• Telstra Corporation Limited · AU

Inventors

• Francois Ouellette · Sydney, AU
• Peter Krug · Nürnberg, DE
• Ben Eggleton · Sydney, AU
• Peter C. Hill · Plano, US

Key dates

• Filing date: Oct 16, 1997
• Grant date: Jun 27, 2000
• Expiry date: Oct 16, 2017

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S5/1218
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An optical device incorporating a grating structure and method of producing same. The grating structure is composed of higher and lower refractive index regions which are positioned periodically with period P, wherein at least one of an amplitude, a phase, and a spatial frequency of the grating structure varies periodically with period L, and wherein at least one of the period L and the period P is chirped continuously over substantially the full extend of the grating structure.