Characterization of an ultra-low loss and high finesse Fabry-Perot cavity at 1064 nm is reported. The characteristics are obtained from measurements of cavity decay time, frequency response and transmission efiiciency. The results show that the mirrors have the loss of 1.5ppm including absorption and scattering losses and the reflectance of 99.9873% which corresponds to a cavity finesse of 2.48><104.
We developed a new class of compact wavelength blocker (WB) array based on liquid crystal on silicon (LCOS), which enables per-channel control of not only the optical transmission power level but also channel center wavelength and channel bandwidth independently. We demonstrate an integrated device with WB array having 12 input/output ports for 50-GHz-spaced International Telecommunication Union-Telecommunication Standardization Sector (ITU-T) channels over the entire -band. The center wavelength and bandwidth can be adjusted independently with a minimum setting resolution of 3 and 6 GHz, respectively.
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