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The relationship between the physical fabrication of asymmetric cladding surface etched DBR structures and the resulting optical characteristics are characterized. The effective index step and DBR scattering loss for these structures is determined.
Diffraction gratings (1D and 2D) were recorded with femtosecond laser pulses in KDP samples. The resulting device behaves as an integrated frequency-doubling beam splitter when irradiated with intense laser radiation.
We have demonstrated an ultra-compact low loss AWG, which is fabricated on 17% index-contrast Hydex material by Little Optics. The device offers good performance and Integrate-ability. It can serve as a key wavelength selective component in a large-scale planar lightwave circuit for WDM applications.
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