High power single mode semiconductor lasers and optical amplifiers using 2D Bragg gratings

US6366598B1 · kind B1 · utility

Assignee

• TRW Limited · US

Inventors

• Doyle T. Nichols · Ellicott City, US
• Srinath Kalluri · Aliso Viejo, US
• Michael G. Wickham · Rancho Palos Verdes, US
• Timothy A. Vang · San Dimas, US
• Michael P. Nesnidal · Shakopee, US
• Robert Lodenkamper · Rancho Palos Verdes, US

Key dates

• Filing date: Feb 10, 1999
• Grant date: Apr 2, 2002
• Expiry date: Feb 10, 2019

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S5/1078
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A waveguide (10) is provided having a two-dimensional optical wavelength Bragg grating (20) embedded within a semiconductor laser medium (16). More particularly, the waveguide (10) includes an active region (16) sandwiched between n-doped and p-doped cladding layers (14, 22). The two-dimensional Bragg grating (20) is formed in the active region (16). Upper and lower electrodes (24, 26) are defined on opposite sides of the cladding layers (14, 22) to complete the waveguide structure (10). The two-dimensional grating (20) provides simultaneous frequency selective feedback for mode control in both the longitudinal and lateral directions.