Optical delay lines for electrical skew compensation

US10110318B2 · kind B2 · utility

Assignee

• Elenion Technologies, LLC · US

Inventors

• Matthew Akio Streshinsky · New York, US
• Ran Ding · Bolton, US
• Yang Liu · Tangxia, CN
• Ari Novack · New York, US
• Michael J. Hochberg · New York, US
• Alex Rylyakov · Staten Island, US

Key dates

• Filing date: Nov 3, 2015
• Grant date: Oct 23, 2018
• Expiry date: Nov 3, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/4274
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A skew compensation apparatus and method. In an optical system that uses optical signals, skew may be generated as the optical signals are processed from an input optical signal to at least two electrical signals representative of the phase-differentiated optical signals. A compensation of the skew is provided by including an optical delay line in the path of the optical signal that does not suffer the skew (e.g., that serves as the time base for the skew measurement). The optical delay line introduces a delay Tskew equal to the delay suffered by the optical signal that is not taken as the time base. The two signals are thereby corrected for skew.