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A four-channel integrated optical wavelength de-multiplexer is experimentally illustrated on a silicon-on-insulator(SOI) substrate. With the aid of cascaded micro-ring resonators, the whole performance of the wavelength demultiplexer is improved, such as 3 dB bandwidth and channel crosstalk. Based on the transform matrix theory, a four-channel wavelength de-multiplexer with average channel spacing 4.5±0.5 nm(3 dB bandwidth~2±0.5 nm)is demonstrated at telecommunication bands. For each channel,the extinction at the adjacent channel is below-39 dB and the out-of-band rejection ratio is up to 40 dB. The channel dropping loss is below 5 dB in the five FSR spectral response periods(near 100 nm).
A four-channel integrated optical wavelength de-multiplexer is experimentally illustrated on a silicon-on-insulator (SOI) substrate. With the aid of cascaded micro-ring resonators, the whole performance of the wavelength demultiplexer is improved, such as 3 dB bandwidth Based on the transform matrix theory, a four-channel wavelength de-multiplexer with average channel spacing 4.5 ± 0.5 nm (3 dB bandwidth ~ 2 ± 0.5 nm) is demonstrated at telecommunication bands. For each channel, the extinction at The adjacent channel is below -39 dB and the out-of-band rejection ratio is up to 40 dB. The channel dropping loss is below 5 dB in the five FSR spectral response periods (near 100 nm).