  We report the first coexistence experiment of 1550 nm single-mode squeezed
states of light with a 1310 nm classical telecom channel over a 10 km fiber
channel while measuring squeezing using a locally generated local oscillator.
This is achieved using real-time optical heterodyne phase locking, allowing us
to measure up to 0.5 dB of squeezing with a phase noise of 2.2 degrees.
