Add drop structure

US11296810B2 · kind B2 · utility

Assignee

• ACCELINK TECHNOLOGIES CO., LTD. · CN

Inventors

• Alan Glen Solheim · Gatineau, CA
• Qinlian Bu · 红钢城街道, CN
• Weiqing Zhang · 红钢城街道, CN
• Chengpeng Fu · 红钢城街道, CN
• Lijie Qiao · Ottawa, CA

Key dates

• Filing date: Dec 27, 2017
• Grant date: Apr 5, 2022
• Expiry date: Dec 27, 2037

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04Q2011/0047
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

An optical circuit includes: a multicast-and-select (MCS) switch and multiple optical selective devices coupled to output ports of the MCS switch. The selective devices may select a single optical channel by blocking some of wavelengths of light passing therethrough and passing at least one other wavelength. The selective devices may be wave blockers or tunable optical filters. The optical circuit further includes an optical amplifying array, wherein each amplifier has an input port optically coupled to one of the selective devices. At least some of the amplifiers have pump light ports for receiving at least a portion of the pump light from one or more laser pumps or from another of the optical amplifiers, wherein the pumps are capable of providing pump light sufficient to fully saturate all of the rare earth doped optical fibers in the array.