In the first part of this contribution we present a concept for the fabrication, assembly and alignment of a multichannel
micro optical-coupler and arrayed microelectronic devices placed on a PCB. This concept is based on a micro opticalcoupler
that integrates several optical sub-systems in a monolithic substrate in order to simplify adjustment processes.
The optical-coupler is fabricated by plastic replication of a metal master with the negative shape of the coupler. For the
fabrication on the PCB, only one alignment step is necessary. By placing markers on the PCB it is possible to position
the coupler over the VCSEL or photodiode array. The placement and connections between the electronic devices on the
PCB are taken into account in the design of the coupler. The mechanical assemblies for populating PCBs with electronic
devices have an accuracy of a few micrometers. Using these techniques an optimal position of the coupler relative to the
VCSEL or photodiode array can be found. In the second part we examine with the help of simulations the effect of
misalignment and tilt of the optical surfaces and possible differences between the optical fibers like decentering. Bitrates
of 120 Gbps in a 12-channel system can be reached using this coupler with commercial electronic devices. Applications
for this system are active optical cables and ultra wide-band board to board communication systems. A FPGA-board for
the test of this concept is in the design phase and will be reported.