Coherent, Inc.

Alcatel Lucent

Coretek, Inc.

Ahura Corporation

Min Jiang

Daryoosh Vakhshoori

Daniel Mahgerefteh

Masud Azimi

Peidong Wang

Kevin J Knopp

Soon Teck Gibson Ang

Xian Cheng

King Ma

Xian Chen

Ma King

An accounting method, system, device, and a computer-readable medium. The accounting method, system, device, and a computer-readable medium provide for measuring a time interval between arrival of two adjacent packets, comparing the measured time interval to a predetermined threshold, and determining whether the measured time interval is an active packet transfer time based on the comparison. Accordingly, an active packet transfer time in a connection is obtained.

Accounting based on active packet time

A high power fiber laser includes a pump source optically coupled to a first fiber laser, which is in turn optically coupled to a second fiber laser. The pump source is adapted to generate light, which is received by the first fiber laser and used to generate a first pulsed output. The first pulsed output is directed into the second fiber laser and is used to generate a second pulsed output. The first fiber laser includes a multi-mode fiber, while the second fiber laser includes a single mode fiber.

High power pulsed fiber laser

This invention discloses a method to control laser dynamics in a gain-switched fiber laser so as to generate stable, clean pulses in an all-fiber format. The gain-switched fiber laser is suitable as a standalone laser source, and as a pump source for harmonic generation and an optical-parametric-oscillator.

Gain-switched fiber laser system

The invention is in the field of distributed Raman amplification for digital and analog transmission applications and other applications, e.g., instrumentation and imaging applications, including HFC-CATV applications. In particular, the invention uses a high power broadband source of amplified spontaneous emission (ASE) as the Raman pump source for improved system performance. The invention also includes methods for constructing such a high-power broadband Raman pump.

System for amplifying optical signals

An efficient high power tunable laser source suitable for use in optical communications equipment and networks comprises an optically pumped VCSEL and a fiber amplifier for the laser output of said VCSEL, with VCSEL and the fiber amplifier being optically pumped by a common optical pump source.

Efficient fiber-semiconductor tunable laser source

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Acton, MA, United States of America

Min Jiang