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Bandwidth narrowing and its compensation of optical frequency converter using optical SSB modulators and Mach-Zehnder interferometers has been investigated. The optical frequency up-conversion and down-conversion of this 2-stage converter are also demonstrated experimentally.
We developed double pulse generators based on two-dimensional slab photonic crystal. The device structures are asymmetric Mach-Zehnder interferometer. In the device, there are two Y shape branches. By utilizing modified Y branches, the loop path in the interferometer is suppressed, and it is shown that the devices are worked as double pulse generators with picoseconds order delay time by measurement...
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