  We investigate a double cavity optomechanical system(OMS) generating single
and double Fano resonance(multi Fano). By altering a single parameter, the
tunneling rate $g$ of the middle mirror, we are able to switch between single
and double Fano line shapes. The first spectral line shape is stronger in the
case of multi Fano than in the case of single Fano. Also the behaviour of
steady state value of the displacement of the middle mirror with respect to
$g$, heavily influences the behaviour of double Fano lines in our scheme. This
tunability along-with using a single pump and signal/probe laser has an added
advantage in situations where only low power consumption is available.
