The individual RF bandwidth of the photodiodes is 10, 15, 20, or 40 GHz. The photodiodes work equally well for 1.3um as well as 1.5um based communication systems. The optical power handling of each photodiode exceeds +12dBm. This makes suitable for coherent systems requiring high optical LO power. The target applications include 100 Gb/s Long-Haul Pol-Mux (D)QPSK, 40 Gb/s Long-Haul (D)QPSK, and 40G/100G parallel networking.
The new array can be configured as a 4-channel receiver or as a 4-channel balanced receiver using two arrays. The Quad PD Array is available as a module with singlemode fiber pigtails with GPPO or coplanar waveguide RF outputs, and is available with or without integrated transimpedance amplifiers.
Jim Rue, Discovery Semiconductors’ manager of High Speed Receivers, comments: The addition of the Quad PD Array and Quad Balanced Receiver to our existing photodiode and balanced receiver product lines is a key enabler for next-generation optical systems such as Long-Haul DWDM 100G, where the receive-side function of the network is most complex and critical.
Amanda Wurm, the spokesperson for Discovery Semiconductors said, The Quad Array was designed and developed by Abhay Joshi, CEO of Discovery Semiconductors, for a mm-wave defense project. Significant efforts were devoted to ensuring very high optical and RF isolation between the individual photodiodes, thus making it highly attractive for applications such as coherent systems.
