JANUARY 6, 2009 -- Civcom (search for Civcom) has announced the availability of a new RZ tunable 10G transponder. Complementing Civcom's Free Light family of tunable NRZ transponders, the new RZ transponder offers equipment manufacturers high-performance for long-haul terrestrial and submarine applications, the company asserts.

"Our newly launched RZ Tunable 12.5G Transponder is built specifically to address the challenging demands of ultra-long-haul terrestrial and submarine applications," stated Yair Itzhar, vice president of sales and marketing at Civcom. "Using this transponder, carriers can achieve stable transmission performance with low optical signal-to-noise ratio over virtually unlimited distances."

Although the RZ modulation format is less commonly deployed than its NRZ counterpart, RZ offers a number of significant advantages in the areas of signal quality and non-linear effect handling, says Civcom. The use of RZ modulation can improve OSNR by up to 2 dB in a simple receiver implementation. In long-haul and ultra-long-haul communications, for example, RZ is much more effective due to its high tolerance of non-linear distortions of the self phase modulation (SPM) type, the company explains.

Designed for long-reach DWDM applications, Civcom's new RZ transponder contains both a 10-Gbps widely tunable transmitter and a wide-band receiver. The module, which was designed to work with 25% FEC, is compatible with the 300-pin MSA and I2C standard. The RZ transponder uses a widely tunable laser covering the entire C-Band.

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