  Resonance coupling in the regime of bound states in the continuum (BICs)
provides an efficient method for engineering nanostructure's optical response
with various lineshape while maintaining an ultra-narrow linewidth feature,
where the quality factor of resonances plays a crucial role. Independent
manipulation of the Q factors of BIC resonances enables full control of
interaction behavior as well as both near- and far-field light engineering. In
this paper, we harness reflection symmetry (RS) and translational symmetry (TS)
protected BIC resonances supported in an asymmetric dimer lattice and
investigate Q-factor-mediated resonance coupling behavior under controlled TS
and RS perturbations. We focus on in-plane electrical dipole BIC (EDi-BIC) and
magnetic dipole BIC (MD-BIC) which are protected by RS, and out-of-plane
electrical dipole BIC (EDo-BIC) protected by TS. The coupling between EDi-BIC
and EDo-BIC exhibits a resonance crossing behavior where the transmission
spectrum at the crossing could be tuned flexibly, showing an
electromagnetically induced transparency lineshape or satisfying the lattice
Kerker condition with pure phase modulation capability depending on TS and RS
perturbed Q factors. While the coupling between MD-BIC and EDo-BIC shows an
avoided resonance crossing behavior, where the strongly coupled resonances
would lead to the formation of a Friedrich-Wintgen BICs whose spectral position
could also be shifted by tuning the Q factors. Our results suggest an
intriguing platform to explore BIC resonance interactions with independent Q
factor manipulation capability for realizing multi-functional meta-devices.
