May 17, 2006 Tokyo -- Sigma-Links, a joint venture company between Fujikura Ltd. and Oki Electric, today introduced a 10-Gbit/sec tunable transponder based on the 300-pin MSA. The device enables transmission over 80 km of singlemode fiber.

The tunable transponder product family supports both the C and L bands. Eighty-eight wavelengths can be set with 50-GHz channel spacing. In addition, the product features a built-in wavelength locker for wavelength stability of < ± 20 pm, making it ideal for use in high-density DWDM systems. The receiver can support both an avalanche photodiode (APD) and PIN photodiode (PIN-PD).

An I²C communication function is built in for remote control. Change of wavelength, alarms, analog monitoring, and other settings also are included.

Engineering samples are now available. Sigma-Links expects to ship more than 2,000 units this year for DWDM and ROADM applications.