Evolution to Colorless and Directionless ROADM Architectures (10/07/2008)
Broad deployment of ROADMs based on wavelength selective switching has significantly improved optical network flexibility. This paper discusses opportunities to extend upon these advances ... >more

Spectral Hole Burning Compensation in Raman/EDF Hybrid Amplifier (10/07/2008)
Maxim Bolshtyansky, Gregory Cowle, JDSU
OFC/NFOEC, February 2008

Abstract: SHB in EDFA can be estimated and compensated in hybrid Raman/EDF amplifier in case of arbitrary ... >more

WSS Switching Engine Technologies (10/07/2008)
OFC/NFOEC, February 2008

Various switching engines such as MEMS, Liquid Crystal, and phased arrays, can be used to implement a colorless WSS. Switching engine affect on device ... >more

Measuring the Optical Signal-to-Noise Ratio of Agile Optical Networks (04/07/2008)
Measurements of optical signal-to-noise ratio (OSNR) using the conventional interpolation method, which is used by standard optical spectrum analyzers (OSAs), is no longer valid for ... >more

Grating Stabilized High-Power 980-nm Pump Modules (04/07/2008)
To address the need for higher power, a new generation of 980-nm singlemode laser diode chips and pump modules has been developed. For example, a new 980-nm pump module can deliver ... >more

Dynamic Compensation of Raman Tilt in a Fiber Link by EDFA during Transient Events (04/07/2008)
The tilt in channel power distribution due to Raman-induced channel-to-channel interaction can be accurately estimated by relatively simple means. Simulations show that the tilt can ... >more

Dynamic Behavior of Spectral Hole Burning in EDFA with 980-nm Pumping (04/07/2008)
Spectral hole burning (SHB) can significantly influence amplifier behavior during transient events. Modeling dynamic SHB effects has proven challenging, particularly for amplifiers ... >more

Addressing Manufacturability and Reliability of MEMS-based WSS (04/07/2008)
The first generation of wavelength-selective switch (WSS) modules had to overcome several key challenges to successfully complete qualification and validation. Here are the steps taken ... >more

A Temporarily Interleaved Technique for Simultaneously Measuring Diagnostic Spectral Parameters and Link Performance in Active Optically Amplified Systems (04/07/2008)
Modern optical networks offer many challenges for test and measurement equipment, as the stability and control of the optical amplifiers may require the loading optical signals to ... >more