  We study the effects of frequency-dependent squeeze amplitude attenuation and
squeeze angle rotation by electromagnetically induced transparency (EIT) on
gravitational wave (GW) interferometers. We propose the use of low-pass,
band-pass, and high-pass EIT filters, an S-shaped EIT filter, and an
intra-cavity EIT filter to generate frequency-dependent squeezing for injection
into the antisymmetric port of GW interferometers. We find that the EIT filters
have several advantages over the previous filter designs with regard to optical
losses, compactness, and the tunability of the filter linewidth.
