  This work reports a fully guided setup for single-mode squeezing generation
on integrated titanium-indiffused periodically poled nonlinear resonators. A
continuous wave laser beam is delivered and the squeezed field is collected by
single-mode fibers, where up to -3.17(9) dB of useful squeezing is available in
fibers. To showcase the usefulness of such a fiber-coupled device, we applied
the generated squeezed light in a fiber-based phase sensing experiment, showing
a quantum enhancement in the signal-to-noise ratio of 0.35 dB. Moreover, our
investigation of photorefraction's impact on the cavity resonance condition
suggests that it causes system instabilities at high powers.
