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Temperature-stable, energy-efficient, and error-free data transmission with oxide-confined 980 nm VCSELs is obtained for bit rates from 25 to over 40 Gb/s across the broad temperature range 25 to 85 °C. The VCSELs are well-suited for board-to-board, chip-to-chip, and on-chip optical interconnects for computer communications.
Error-free data transmission using oxide-confined 980 nm VCSELs is reported for 50 and 46 Gb/s at 25 and 85°C, respectively. These extremely temperature-stable lasers are particularly well-suited for ultra-short-reach and very-short-reach optical interconnects.
In this paper, we study the influence of current localization on the isolation between two antennas in a compact terminal setting. The two antennas are chosen to be a monopole and a PIFA. The degree of current localization is controlled by the permittivity value of the PIFA's dielectric loading. Both lossless and lossy cases are simulated in order to ascertain the underlying performance impact from...
Switching between line of sight (LOS) links and satellite links in an airborne network (AN) environment causes many challenging problems for the transport protocol. The typical bandwidth of a satellite link may be in the order of 1 Mbps and the round trip time (RTT) may be around 500 ms. The bandwidth of a LOS link is in the order of 300 Kbps and the RTT is just a few milliseconds. Therefore, switching...
This paper presents the study and the realization of a hybrid 60 GHz wireless communications system. As the 60 GHz radio link operates only in a single-room configuration, an additional Radio over Fibre (RoF) link is used to ensure the communications in all the rooms of a residential environment. A single carrier architecture is adopted. The system uses low complexity baseband processing modules....
This paper studies how to select a path with the minimum cost in terms of expected end-to-end delay (EED) in a multi-radio wireless mesh network. Different from the previous efforts, the new EED metric takes the queuing delay into account, since the end-to-end delay consists of not only the transmission delay over the wireless links but also the queuing delay in the buffer. In addition to minimizing...
We demonstrate tunable dispersion compensation in a 4times40-Gb/s system using sampled NC-FBGs with negligible errors from dispersion slope. The tuning ranges are 400 ps/nm for a single FBG and 600 ps/nm for a twin cascaded-inverse FBG configuration
We demonstrate tunable dispersion slope compensation for 40-Gb/s WDM systems using two inverse 3rd-order chirped gratings. The inherent errors in a single grating are eliminated. The slope range is -20 to +20 ps/nm2over a 5-nm bandwidth.
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