Compact Planar Waveguide Couplers for Broadband Dual-Channel Wavelength (De)Multiplexing
Rare-earth doped waveguide amplifiers are of interest for applications in planar optical integrated circuits –. Coarse dual-channel wavelength (demultiplexers are needed to separate/combine the signal and pump light. Several integrated devices can perform this multiplexing function –. Conventional directional couplers , and unbalanced Mach-Zehnder interferometers  are generally characterized by relatively long devices. Composite asymmetric Y-branches  employ asymmetry in the refractive index profile and require a two mask fabrication process.
KeywordsInsertion Loss Refractive Index Profile Coupler Length Bend Radius Waveguide Parameter
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- 2.T. Kitagawa, K. Hattori, Y. Hibino, Y. Ohmori, and M. Horiguchi, “Laser oscilation in Er-dopcd silica-based planar ring resonator,” in Proc. ECOC 1992, pp. 907–910.Google Scholar