This work have analyzed the effect of increasing number of wavelength converters and grooming devices over the network performance. Deciding the amount and location of these devices to be used in a network is equally important. For this purpose, different placement schemes are used on the proposed network model and assumptions. Our work has been done through the simulations of different device placement scenarios and the results have been analyzed using blocking probability as the performance metric. We have reviewed the performance of wavelength converters with different grooming devices.