Smaller optical transceivers reach 10km
The new modules for both short reach and long reach applications are currently being sampled with network equipment manufacturers and companies focused on high-speed computing solutions. JDSU expects to have the products commercially available by the first quarter of 2012.
Increasing use of cloud computing, online video, voice over IP (VOIP) and other internet applications are driving large amounts of content through enterprise, LAN and SAN, and telecom networks. Network operators are under pressure to deploy high performance and high density optical products to support 40G and 100G bitrates while continuing to drive down operating expenses.
The QSFP+ long reach module generates and modulates four different wavelengths of light at 10G speeds and combines them into a single optical fiber for client-side network transmission. It is also capable of receiving the four light channels and reconstructing the 40G signal, providing full transceiver capability at 40G for distances up to 10 kilometers.
To support shorter distances of less than 100 meters, JDSU has also developed the QSFP+ short reach module. It uses JDSU vertical cavity surface emitting laser (VCSEL) technology to generate four different optical signals, each modulated at 10G and transmitted over ribbon fiber. The module is also able to receive this incoming light and reconstruct the 40G data stream to provide a full transceiver solution. It is designed to supports both 40GE and OTU3 protocols.