Method and apparatus to generate and monitor optical signals and control power levels thereof in a planar lightwave circuit

US7780360B2 · kind B2 · utility

Assignee

• Intel Corporation · US

Inventors

• Achintya Bhowmik · Cupertino, US
• Nagesh Vodrahalli · Cupertino, US
• Gennady Farber · Los Altos, US
• Hai Feng Liu · Beijing, CN
• Hamid Eslampour · San Jose, US
• Ut Tran · San Jose, US
• William Wong · Saratoga, US
• Ruolin Li · Santa Clara, US
• Jesper Arentoft Jayaswal · Palo Alto, US

Key dates

• Filing date: Jul 21, 2008
• Grant date: Aug 24, 2010
• Expiry date: Nov 20, 2028

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S5/4087
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Embodiments of an optical detection apparatus are disclosed which may include one or more of a waveguide, a trench formed in the waveguide, a reflective surface, and a photodetector. The waveguide may be formed in a semiconductor substrate to propagate an optical signal received at a first end of the waveguide. The trench may also be formed in the waveguide having a first sidewall and a second sidewall, the first and second sidewalls forming first and second angles with the waveguide's propagation direction. The second sidewall may include a reflective surface formed thereon. The photodetector may be configured to receive an optical signal propagated in the waveguide, through the first sidewall and reflected from the reflective surface on the second sidewall.