Erni, Daniel; Lenz, Daniel; Lehky, Jan-Marc; Offrein, Bert Jan; Lamprecht, Tobias:
Modal multiplexing in highly overmoded waveguide channels for high-speed board-level optical interconnects
In: Mobile Optical Wireless Week; 12th MICROCOLL - Colloquium on Microwave Communications - 14-18 May, 2007, Budapest, Hungary, 2007, S. 53 - 56
2007Buchaufsatz/Kapitel in Sammelwerk
Elektrotechnik
Titel:
Modal multiplexing in highly overmoded waveguide channels for high-speed board-level optical interconnects
Autor*in:
Erni, DanielUDE
GND
1175897205
LSF ID
47126
ORCID
0000-0002-1467-6373ORCID iD
Sonstiges
der Hochschule zugeordnete*r Autor*in
;
Lenz, Daniel;Lehky, Jan-Marc;Offrein, Bert Jan;Lamprecht, Tobias

Abstract:

To keep up with the increasing demand for data rate in high-end servers, and especially in configurations encompassing e.g. symmetric multi-processor (SMP) systems, I/O memories and ultra-fast system bus links, board-level optical interconnects have become increasingly important even for very short link topologies «inside the box» being typically in the range of 10 cm that may scale up to several meters. Merging optical waveguide technology with state-of-the-art printed circuit board (PCB) production is reliable only if the involved waveguide cross sections are of considerably large extent, leading to a highly overmoded optical transmission channel. As in mobile communications, such “problematic” channels are prone to be exploited by advanced transmission schemes based on multiple-input multiple-output (MIMO) communications. We present the idea of an optical MIMO channel by having more than one laser source at the input and a detector array at the output. With proper tailoring of the underlying mode group multiplexing mechanism, aggregated data rates in the multiple 10 Gb/s range may be achievable supporting bandwidth densities of 10 Tb/s/inch already with present optical interconnect technologies.