  Long-baseline interferometry and high-resolution spectroscopy are two
examples of areas that have benefited from astrophotonics devices, but the
application range is expanding to other subareas and other wavelength ranges.
The VLTI has been one of the pioneering astronomical infrastructure to exploit
the potential of astrophotonics instrumentation for high-angular resolution
interferometric observations, whereas new opportunities will arise in the
context of the future ELTs. In this contribution, I review the current state of
the art regarding the interplay between photonic-based solutions and
astronomical instrumentation and highlight the growth of the field, as well as
its recognition in recent strategy surveys such as the Decadal. I will explain
the benefits of different technological platforms making use of
photolithography or laser-writing techniques. I will review the most recent
results in the field covering simulations, laboratory characterization and
on-sky prototyping. Astrophotonics may have a unique role to play in the
forthcoming era of new ground-based astronomical facilities, and possibly in
the field of space science.

Instrumentation and Methods for Astrophysics