Richardson, TX, October 21, 2004--Anritsu has introduced AD14113 and AD14109 photodetectors designed for high sensitivity and strong resiliency to optical overload. They are intended to suit design needs for 10 Gbit/s optical transmission systems, such as SDH/SONET networks.
The AD14113 is a PIN photodiode with a transimpedance amplifier (PIN+TIA) that incorporates a waveguide launched PIN structure with 0.95 A/W sensitivity. Consequently, the AD14113 has back-to-back sensitivity of -21 dBm for NRZ signals at 10.7 Gbit/s. For longer transmission distances, the AD14109 avalanche photodiode with a transimpedance amplifier (APD+TIA) has sensitivity of typically -26 dBm for 10Gbit/s NRZ signals.
Incorporating a surface mount design, the AD14113 and AD14109 have small footprints so they can be easily designed as receivers in both short and long haul transponder/transceiver applications. In addition, both photodetectors incorporate automatic offset controls that minimize the need for external control circuitry.
