Acacia Communications, Inc.

Alcatel Lucent

Song Jiang

Christopher Richard Doerr

Ian Juso Dedic

John LoMedico

Xiang Liu

Derrick Remedios

Colin Geoffrey Kelly

Benny P Mikkelsen

Benny Mikkelsen

An apparatus and system, including a switch; and a set of tiles; wherein each of the set of tiles include a PIC die, a DSP die, a driver die, and a TIA die and methods thereto.

Switch

For wavelength division multiplexing (WDM) communications, apparatus and methods are provided for performing tone-based optical channel monitoring that is less sensitive to stimulated Raman scattering (SRS). In tone-based optical channel monitoring, in which WDM channels are modulated with one or more tones, detecting and measuring the tone power is commonly used as a measure of signal power in each channel. In WDM systems with long fiber spans and high signal powers, however, SRS tends to transfer energy from shorter wavelengths to longer wavelengths, whereby the tones are no longer accurately indicative of the signal power of the individual wavelength channels. Apparatus and methods are provided which reduce the effect of SRS by filtering the monitored WDM signals into sub-bands and detecting each sub-band independently.

Apparatus and method for improving the tolerance of tone-based optical channel monitoring to stimulated Raman scattering

Growing community of inventors

Watchung, NJ, United States of America

Song Jiang