Transmitter photonic integrated circuit (TxPIC) chip with enhanced power and yield without on-chip amplification

US7058246B2 · kind B2 · utility

Assignee

• Infinera Corp. · US

Inventors

• Charles H. Joyner · Sunnyvale, US
• Fred A. Kish, Jr. · Palo Alto, US
• Frank Peters · Cork, IE
• Atul Mathur · Beaverton, US
• David F. Welch · Atherton, US
• Andrew G. Dentai · Mountain View, US
• Damien Lambert · Los Altos, US
• Richard P. Schneider · Mountain View, US
• Mark J. Missey · San Jose, US

Key dates

• Filing date: Oct 8, 2002
• Grant date: Jun 6, 2006
• Expiry date: Dec 11, 2023

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S5/205
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A monolithic photonic integrated circuit (PIC) chip comprises an array of modulated sources providing a plurality of channel signals of different wavelengths and an optical combiner coupled to receive the channel signals and produce a combined output of the channel signals. The arrays of modulated sources are formed as ridge waveguides to enhance the output power from the respective modulated sources so that the average output power from the sources is approximately 2 to 4 times higher than in the case of comparable arrays of modulated sources formed as buried waveguides.