Surface passivation and sealing of micro-optics devices for improved performance in harsh environments

US7585546B2 · kind B2 · utility

Assignee

• FINISAR CORPORATION · US

Inventors

• Ming Shi · Shanghai, CN
• William R. Freeman · Del Mar, US
• Johnny Zhong · Hayward, US
• Liren Du · San Jose, US
• Xin LOU · Blacksburg, US
• Steve Wang · Cary, US

Key dates

• Filing date: Aug 11, 2004
• Grant date: Sep 8, 2009
• Expiry date: Feb 19, 2027

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/264
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Methods and structures for reducing and/or eliminating moisture penetration in an optical package. The optical package may include (1) a layer of inorganic material placed over the points of the optical package susceptible moisture penetration of the optical package; (2) a portion of hygroscopic material placed over the points of the optical package susceptible to moisture penetration; (3) a layer of hygroscopic material placed on the interior surface of the optical package; and/or (4) a layer of hydrophobic material coated on the optical surfaces of the optical package.