An array of waveguide lasers operating at 1533 nm has been fabricated on Er
:Yb-doped glass substrate by the silver-sodium ion-exchange technique. The
maximum single-frequency output power from a single channel is 0.8mW, with
a relative intensity noise of -82dB/Hz at the relaxation oscillation peak a
nd below approximately -150dB/Hz for frequencies higher than 2MHz.