  Rapid development in integrated optoelectronic devices and quantum photonic
architectures creates a need for optical fiber to chip coupling with low
losses. Here we present a fast and generic approach that allows temperature
stable self-aligning connections of nanophotonic devices to optical fibers. We
show that the attainable precision of our approach is equal to that of
DRIE-process based couplings. Specifically, the initial alignment precision is
$1.2\pm 0.4\mu m$, the average shift caused by mating $<0.5\mu m$, which is in
the order of the precision of the concentricity of the employed fiber, and the
thermal cycling stability is $<0.2\mu m$. From these values the expected
overall alignment offset is calculated as $1.4 \pm 0.4\mu m$. These results
show that our process offers an easy to implement, versatile, robust and
DRIE-free method for coupling photonic devices to optical fibers. It can be
fully automated and is therefore scalable for coupling to novel devices for
quantum photonic systems.
