Method of achieving acceptable performance in and fabrication of a monolithic photonic integrated circuit (PIC) with integrated arrays of laser sources and modulators employing an extended identical active layer (EIAL)

US9372306B1 · kind B1 · utility

Assignee

• Infinera Corp. · US

Inventors

• Radhakrishnan L. Nagarajan · Santa Clara, US
• Fred A. Kish, Jr. · Palo Alto, US
• Masaki Kato · Palo Alto, US
• Charles H. Joyner · Sunnyvale, US
• David F. Welch · Atherton, US
• Randal A. Salvatore · Watertown, US
• Richard P. Schneider · Mountain View, US
• Mehrdad Ziari · Pleasanton, US
• Damien Lambert · Los Altos, US
• Sheila K. Hurtt · Portland, US
• Andrew G. Dentai · Mountain View, US
• Atul Mathur · Beaverton, US
• Vincent G. Dominic · Fremont, US

Key dates

• Filing date: Jan 27, 2005
• Grant date: Jun 21, 2016
• Expiry date: Jan 27, 2025

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S5/50
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A method provides acceptable performance from a semiconductor transmitter photonic integrated circuit (TxPIC) that contains a plurality of modulated sources each comprising a laser source and an external modulator where each laser source provides a different emission wavelength and each modulated source forms a separate signal channel, comprising the steps of providing at least some of the signal channels with an extended identical active layer (EIAL) so that the modulated sources each have an identical active region wavelength and detuning the laser emission wavelength in each laser source within the EIAL from the laser active region wavelength.