Tiejun Xia

Transmission of 107-Gb/s DQPSK over Verizon 504-km Commercial LambdaXtreme® Transport System

A 107-Gb/s field trial was conducted on a traffic carrying long-haul LambdaXtreme® transport platform over an active 504-km Verizon route in Florida thus proving upgradeability to 100 G of the Alcatel-Lucent 50-GHz spaced ULH DWDM system.

Field trial of 107-Gb/s channel carrying live video traffic over 504 km in-service DWDM route

A 107-Gbps field trial carrying live HDTV traffic over a 504-km in-service DWDM route, proving commercial systems designed for 10G/40G can be upgraded to 100G without impacting existing active channels.

In-service light path PMD (polarization mode dispersion) monitoring by PMD compensation.

We describe a novel method of measuring PMD (polarization mode dispersion) of an in-service DWDM system by PMD compensation. We successfully demonstrate the method in a 1500-km ultra-long haul DWDM test bed. We further verify the feasibility of the method for in-service light path PMD monitoring in a field trial in a revenue-generating route in Verizon Network, and obtain an accurate PMD value without impacting live network traffic. The discrepancy between the measured and expected PMD values is less than 6% for all cases tested.

First Trial of Maintenance Friendly Network (MFN) by Switching Spare Field Fibers without Traffic Interruption

Maintenance friendly network is demonstrated for first time with three SONET protection schemes fed into a ULH system. Traffic can be switched between six field fibers without triggering protection on 1+1, UPSR, or BLSR configurations.

Field Trial of Photonic Switches for Efficient Fiber Network Operation and Maintenance

Results of Verizon field trial using MEMS and beam-steering photonic switching technologies for automating network operation and maintenance functions show that operational expenses and downtime can be significantly reduced.

Intra-channel chromatic dispersion measurements with live neighboring signals in a long haul DWDM system

A novel four-tone probe signal is used to measure end-to-end residual chromatic dispersion in single 50-GHz DWDM channels of a long-haul ROADM network while transmitting more than 30 live signals in neighboring channels.

Costs per Home Connected: The Impacts of Automated Fiber Management On Fiber-to-the-Home Deployments

We demonstrate the economic impact of automated fiber management (AFM) in FTTH networks, specifically to defer capital costs and reduce operating costs by automating testing, provisioning, maintenance, troubleshooting, and grooming operations.

In-service chromatic dispersion and pass-band shape measurements for light path with modulated ASE source

A tunable modulated broadband source and narrow-bandwidth filter are used to measure chromatic dispersion, group-delay ripple, and pass-band shape of DWDM-network light paths. This new method is simple and suitable for in-service measurements.