Ultra-high speed OTDM networks require stable and compact all optical switches for demultiplexing and routing. In this paper we investigate the noise and crosstalk characteristics of all optical symmetric Mach-Zehnder (SMZ) switch using a numerical model. Two effects, the relative intensity noise (RIN) and channel crosstalk (CXT) that degrade the performance of the switch are investigated. Nume...

In this paper we investigate the noise and crosstalk characteristics of all optical router based on SMZ switch using a numerical model. Two effects, the relative intensity noise (RIN) and channel crosstalk (CXT) that degrade the bit error rate (BER) performance of the router are investigated. Numerical simulation results show that for BER of 10, the sensitivity of the receiver with all-optical ...

We have built a vertical seismometer that works based on the moiré technique. One grating is attached to the suspended mass and one to the frame of the instrument. The two gratings are in relative motion, and the resulting moiré pattern magnifies this motion. The intensity of a light beam passing through the moving moiré fringes changes with time, and a light detecting syst...

As particle densities in accelerators and storage rings increase, instabilities arise that dilute emittance or, at worst, actually drive the beam out of the machine. Beam feedback systems can extend the intensity threshold of these instabilities. These systems have pushed the intensity limits of many accelerators beyond their design intensity and have become a necessity for present day operatio...