MTA Attenuator Shelf tests the performance of multichannel, optically amplified transmission systems. The unit holds eight precision attenuators, which are used to adjust the optical powers from the system transmitter to test for signal-to-noise degradation in particular channels. The system consists of a 2U high, 19-inch rack-mount shelf; a control cassette supporting front panel or ieee- 488.2 remote control; and one to eight interchangeable attenuator cassettes. The standard cassette is made for singlemode fiber and can be ordered with fc/apc or sc/apc front panel-mounted connectors. Custom connector interfaces can be ordered. PDL is typically less than 0.03 dB over 1545 to 1565 nm, and return loss is typically greater than 60 dB. The eight-attenuator shelf unit costs $22,500.
JDS Fitel Inc., Nepean, ON, Canada