Demonstration of low loss integrated InGaAsP/InP demultiplexer device with low polarisation sensitivity

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作者：

SM Ojha，GHB Thompson，CG Cureton，CB Rogers，SJ Clements，M Asghari，IH White

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摘要：

An integrated InGaAsP/InP wavelength demultiplexer operating around 1.5 μm wavelength, using total internal reflection from dry-etched collimating mirrors and transmission grating, has been realised in polarisation insensitive symmetrical slab waveguide. The device exhibits polarisation dispersion that equates to less than 1 nm spectral dispersion, losses down to 7.2 dB and crosstalk less than –20 dB.

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关键词：

Practical/ demultiplexing equipment diffraction gratings gallium arsenide gallium compounds III-V semiconductors indium compounds integrated optics light polarisation optical communication equipment optical losses optical waveguides/ DEMUX low loss low polarisation sensitivity wavelength demultiplexer total internal reflection dry-etched collimating mirrors transmission grating polarisation insensitive symmetrical slab waveguide 1.5 micron 7.2 dB InGaAsP-InP/ A4282 Integrated optics A4280L Optical waveguides and couplers A4280S Optical communication devices A4280F Gratings, echelles B4140 Integrated optics B4130 Optical waveguides B6260 Optical communication B6230Y Other switching centres/ wavelength 1.5E-06 m loss 7.2E+00 dB/ InGaAsP-InP/int InGaAsP/int InP/int As/int Ga/int In/int P/int InGaAsP/ss As/ss Ga/ss In/ss P/ss InP/bin In/bin P/bin