Hybrid superprism with low insertion losses and suppressed cross-talk

Details Hybrid superprism with low insertion losses and suppressed cross-talk Hybrid superprism with low insertion losses and suppressed cross-talk

Feb 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005phrve..71b6604w&link_type=abstract

Physical Review E, vol. 71, Issue 2, id. 026604

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2

Other Integrated-Optical Elements And Systems

Scientific paper

We demonstrate with the two-dimensional finite-difference time-domain method that an adiabatic transition in a superprism with an interface along the [1 2¯ ] direction enhances the transmission through the superprism to more than 90% (-0.5 dB) over the wavelength range 1.47 1.68 μm, including the telecommunication C and L bands. We also show that diffraction governed by a quasinegative index of refraction inside the superprism can be used to obtain nearly transform-limited beam widths at the output of the superprism. The reduction of the beam width at the output suppresses cross-talk and greatly enhances the achievable frequency resolution of the superprism.

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