B-OTDR Brillouin reflectometer BOTDR (Brillouin optical time domain reflectometer). Another kind of reflectometers is based on the Brillouin scattering. In the typical reflectometers the Rayleigh scattering is employed for analysis. The BOTDR reflectometer utilizes the phenomenon of the inelastic Brillouin scattering, related to generation of acoustic wave at frequency fB.…
Introduction to μQSFP Transceiver
The μQSFP transceiver is being presented as a potential future interface by the Ethernet Alliance. This is a very challenging technical concept for a 100GBASE-SR4 transceiver with MPO connector interface having the outer dimensions of the SFP+ form factor.
μQSFP transceiver with MPO connector interface
With the μQSFP form-factor it becomes possible to keep the usual density of 48 ports in a 1U tall switch. This gives a mathematical performance of 48 x 100G = 4.8 Terabit/s for such a 1U switch which is needed to solve the ever increasing need for data bandwidth.
- 33% increase in density over QSFP (based on 48 microQSFP ports vs. 36 QSFP ports in 365mm)
- Same 4 channel electrical interface as QSFP
- Same 3.5+W power capability as QSFP+
- Will support 25G and 50G (PAM4) electrical data rates
- Functionality of QSFP in SFP density
- Significantly improved thermal management
- Accommodates multiple electrical interface generations (4 channels, to 2 channels, to 1 channel), while supporting a long life optical interface WITHOUT changing form factor
- Enables up to 72 ports per 1RU line card
- Enables a second generation line card with higher port density than a QSFP based line card
- Enables the same IO density as SFP with improved thermal management and increased bandwidth density