1 September 2004 Demultiplexers for ultranarrow channel spacing based on Mach-Zehnders and ring resonators
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Abstract
Novel demultiplexer configurations based on concatenated Mach-Zehnders and a ring resonator are presented. These new devices exhibit high channel isolation, flexibility, no loss, and megahertz-adjustable full width at half maximum (FWHM) suitable for narrow channel spacing. General design equations are described. Examples of a 1×4-2.5-GHz demultiplexer and a 2.5-GHz/5-GHz interleaver are reported. These designs have channel isolation >40 dB, 128 MHz FWHM, 10 dB gain. These devices can be conveniently implemented using the silicon or InP integrated optic technologies. A fabrication tolerance analysis is carried out. The worst figures for the previous designs are 220 MHz FWHM, 23-dB channel isolation, and 5.7-dB gain and can be readjusted with a gain control.
© (2004) Society of Photo-Optical Instrumentation Engineers (SPIE)
Carmen Vazquez Garcia, Salvador E. Vargas, Jose M. Sanchez-Pena, Ana Belen Gonzalo, "Demultiplexers for ultranarrow channel spacing based on Mach-Zehnders and ring resonators," Optical Engineering 43(9), (1 September 2004). https://doi.org/10.1117/1.1778175 . Submission:
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