TechNavio's analysts forecast the Global Wavelength Select Switch market to grow at a CAGR of 21.05 percent over the period 2011-2015. One of the key factors contributing to this market growth is the increasing deployment of 3G and LTE networks. The Global Wavelength Select Switch market has also been witnessing the increasing use of 50 GHz wavelength select switches. However, the, market contraction due to demand-supply mismatch could pose a challenge to the growth of this market.