Tokyo-based Sumitomo Electric Industries Ltd(SEI),a provider of advanced optical solutions,is expanding its optical device portfolio with the introduction of a 4-channel ROSA with optical demultiplexer for 40Gb/s QSFP+LR4.
QSFP+is a compact transceiver emerging as the standard for 40GbE.Its technology for longer-reach single modes finds many applications beyond 100m such as communication equipment used for data storage,networking devices for data centers,and enterprise networking where high-density power-saving systems are required.
The ROSA satisfies the IEEE 802.3ba requirements for the 40Gb/s optical receiver.The 40GbE performance is based on transmitting and receiving four different wavelengths at 10Gb/s.This ROSA includes four high-speed PIN photodiodes,four transimpedance amplifiers,and an optical demultiplexer,which consists of specially designed low insertion loss filters and mirrors.The device supports extremely high receiver sensitivity of-16dBm,says SEI.
By applying this technology to higher bit rate devices,SEI says it will offer a 4-channel ROSA for 100GbE.
For details,visit stand 600 at ECOC(Amsterdam,The Netherlands,17-19 September).
