Wavelength division multiplexing system

US8218972B2 · kind B2 · utility

Assignee

• Connector Optics LLC · RU

Inventors

• Nikolai Ledentsov · Berlin, DE
• Vitaly Shchukin · Berlin, DE

Key dates

• Filing date: Jul 1, 2010
• Grant date: Jul 10, 2012
• Expiry date: Jul 1, 2030

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10F55/15
• WIPO field: Micro-structural and nano-technology
• WIPO sector: Chemistry

Abstract

A wavelength division multiplexing system has an array of wavelength-tunable lasers with at least two wavelength-tunable lasers emitting laser light at mutually different wavelengths, a first diffraction grating, an optical fiber, a second diffraction grating, and an array of photodetectors. The laser light emitted by the different wavelength-tunable lasers wavelengths impinges upon the first diffraction grating where it is reflected so as to impinge on an input end of the optical fiber. The light then propagates in the optical fiber and comes out from an output end of the optical fiber. Then the laser light having at least two different wavelengths further impinges on a second diffraction grating, whereupon it is reflected such that laser light having a first wavelength impinges on a first photodetector, and laser light having a second wavelength impinges on a second photodetector, which is different from the first photodetector.