March 23, 2017

Performance Comparison of Capacity-Achieving Modulation Formats for Transoceanic Optical Systems

  • Fernandez De Jauregui Ruiz I.
  • Ghazisaeidi A.
  • Tran P.

We experimentally compare the performance of geometrically-shaped (64APSK) and probabilistically-shaped 64QAM (PS64QAM) formats considering linear and nonlinear penalties.

Recent Publications

April 12, 2017

From Scaling Disparities to Integrated Parallelism: A Decathlon for a Decade

  • Neilson D.
  • Winzer P.

Based on a variety of long-term network traffic data across different geographies and applications as well as long-term scaling trends of key information and communication technologies, we identify fundamental scaling disparities between technologies used to generate and process data and technologies used to transport data. These disparities could lead to ...

April 12, 2017

An 8 x 10-Gb/s, 42-km High-Split TWDM PON Featuring Distributed Raman Amplification and a Remotely Powered Intelligent Splitter

  • Earnshaw M.
  • Gnauck A.
  • Hehmann J.
  • Iannone P.
  • Jentsch L.
  • Pfeiffer T.
  • Straub M.

We demonstrate an intelligent symmetric-rate, 8 x 10- Gb/s, bi-directional time and wavelength-division multiplexed passive optical network (TWDM-PON) with 42-km reach, and 1:256 split. 1425-nm laser pump light provides distributed Raman amplification for the upstream channels (allowing lowcost low-power transmitters), serves as a low-rate telemetry channel, and powers an intelligent ...

March 27, 2017

Dielectric powder loaded coaxial-cavity filters

  • Bulja S.
  • Doumanis E.
  • Pivit F.

In this paper we demonstrate the use of low-loss powders in the design and fabrication of RF filters. Initially, several different powders are tested for their RF performance - in particular their relative dielectric permittivity and loss tangent. Then, based on the information obtained in this way, the best performance ...