  We examine the use of optomechanically-generated squeezing to obtain a
sensitivity enhancement for interferometers in the gravitational-wave band. The
intrinsic dispersion characteristics of optomechanical squeezing around the
mechanical frequency are able to produce squeezing at different quadratures
over the spectrum, a feature required by gravitational-wave interferometers to
beat the standard quantum limit over an extended frequency range. Under
realistic assumptions we show that the amount of available squeezing and the
intrinsic quadrature rotation may provide, compared to similar amounts of
fixed-quadrature squeezing, a detection advantage. A significant challenge for
this scheme, however, is the amount of excess noise that is generated in the
unsqueezed quadrature at frequencies near the mechanical resonance.
