Non-adiabatically-tapered connector

US4877300A · kind A · utility

Assignee

• CORNING INCORPORATED · US

Inventors

• Mark A. Newhouse · Corning, US
• Daniel Aloysius Nolan · Corning, US
• David Lee Weidman · Corning, US

Key dates

• Filing date: Oct 24, 1988
• Grant date: Oct 31, 1989
• Expiry date: Oct 24, 2008

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/262
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Disclosed is a mode field modifier which can be used in a fiber-to-fiber connector or a source-to-fiber connector. In a downtaper-type mode field modifier embodiment, the modifier comprises a modifier core of refractive index n.sub.1 surrounded by first and second cladding layers having refractive indices n.sub.2 and n.sub.3, respectively. In an uptaper-type mode field modifier embodiment, the modifier comprises a modifier core of refractive index n.sub.1 surrounded by a cladding layer having a refractive index n.sub.2. The refractive indices are such that n.sub.1 >n.sub.2 >n.sub.3. In both embodiments, there is a nonadiabatic taper intermediate the ends of the mode field modifier, whereby a substantial amount of mode coupling occurs therein.