M.J. Holmes

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We have designed and fabricated highly nonlinear dispersion-shifted germania-doped silica fibers for use in the EDFA gain window, and measured a 9-fold increase in the fiber nonlinearity, compared to conventional dispersion-shifted fiber. We have also measured the contribution of the germania index-raising dopant to the effective fiber nonlinearity. We(More)
The design, assembly, and performance of a prototype 1/spl times/8 free-space switch demonstrator using reconfigurable holograms are reported. Central to the switch fabric is a ferroelectric liquid crystal (FLC) on silicon spatial light modulator (SLM) deposited with a 540/spl times/1 array of highly reflective and planar mirror strips. The input and output(More)
The design, assembly and performance of a prototype 1/spl times/8 reconfigurable holographic free-space switch is described. Central to the switch fabric is a ferroelectric liquid crystal (FLC) on silicon spatial light modulator (SLM) deposited with a 540/spl times/1 array of planar mirror strips. The input and output ports to the switch are fabricated as a(More)
We have described novel probabilistic methods to analyze the accumulation of impairments in wavelength-routed networks. We have used the model to calculate confidence limits for acceptable bit error rate performance in the presence of crosstalk from routing elements such as optical switches. Our calculation takes into account all possible network(More)
We present a novel method to study impairments in wavelength division multiplexing (WDM) networks by using probability theory to simulate the wavelength channel assignment and the flow of signals through the network, and also to calculate confidence limits for acceptable network performance. We apply the method to study the accumulation of homodyne beat(More)
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