Author/Authors :
Liu، Bin نويسنده , , J.E.، Bowers, نويسنده , , D.J.، Blumenthal, نويسنده , , V.، Kaman, نويسنده , , Zheng، Xuezhe نويسنده , , C.، Pusarla, نويسنده , , H.N.، Poulsen, نويسنده , , Yuan، Shifu نويسنده , , Xu، Yuanjian نويسنده , , O.، Jerphagnon, نويسنده , , Keating، Adrian نويسنده , , R.C.، Anderson, نويسنده , , J.R.، Sechrist, نويسنده , , R.، Helkey, نويسنده ,
Abstract :
Photonic cross-connects (PXC) play a key role in all-optical transparent networks. In this paper, the optical design and modeling of a three-dimensional microelectromechanical system (3-D MEMS) based optical switch are discussed. Basic design rules and considerations are reviewed and used to determine the optimum configuration for free-space optical switches with more than 300 ports. The optical performance of a 256 * 256 PXC system, including a 347 * 347 nonblocking core switch and auxiliary 2 * 2 optical switches for 1:1 protection and optical taps for power monitoring, is presented. The core switch has 1.4-dB median insertion loss, 1.5-dB wavelength dependent loss across a broadband of 1260-1625 nm, and a typical polarization dependent loss of 0.1 dB. Environmental tests including temperature and vibration are described.
