Featured Articles

Is Active Ethernet best FTTH option for Google?

FEBRUARY 24, 2010 By Stephen Hardy -- Google’s plans to test 1-Gbps open access FTTH networks has drawn considerable attention -- particularly from equipment vendors who believe their Active...

Engineering DPSK spectral properties enables superior performance through multiple cascaded optical wavelength-selective switches

Wavelength-selective switches (WSS) are crucial elements in a 40G network, but degrade signal quality. Measurements show crosstalk can increase the BER by an order of magnitude, which is equivalent...

RFoG plus PON – Enabling cable’s ‘all-IP’ future?

Combining RF over glass with PON technology provides a way for cable operators to cost-effectively deploy fiber where it makes sense – both today and tomorrow. By Dawn E. Emms and Luis...

Applicants, vendors wait out broadband stimulus delays

OCTOBER 2, 2009 By Stephen Hardy -- Applicants of various sizes and stripes -- not to mention the vendors who hope to supply them with equipment -- continue to drum their fingers on their desks as...

Staying ahead of the access bandwidth curve with WDM-PON

Carriers and access bandwidth providers have undergone a somewhat frustrating churn through passive optical network (PON) architectures over the last decade in an attempt to get ahead of the...

Calix raises $100 million

AUGUST 31, 2009 By Stephen Hardy -- Calix (search Lightwave for Calix) has defied the credit crunch by announcing it has raised $100 million in financing. The access equipment vendor has garnered...

More glass than copper: Japan's broadband optical access market

Led by a variety of carriers and spurred by government policies, Japan has emerged as the world's leader in FTTH deployment. The market has spurred new equipment requirements. By Hirokazu OzakiNEC...

SFP+ and EDC: The 10-Gigabit Ethernet game changer

Figure 1. Evolution of pluggable optical module form factors The combination of SFP+ and EDC has enabled the deployment of high-density, low-cost 10GbE equipment, making fiber (and more recently,...

Solving the QoS bottleneck

For a variety of bandwidth-rich applications, the implementation of dynamic synchronous transfer mode (DTM) combines the best of IP and modern optical transport. By Dr. Christer Bohm Net...

Packet optical transport and the evolution of Ethernet

In the next stage of its evolutionary development, Ethernet becomes the protocol for transport across an optical infrastructure in access, metro, regional, and core networks. By Fred Ellefson ADVA...