Effect of mask grid on SOI arrayed waveguide grating performance

Pathak, Shibnath; Vanslembrouck, Michaël; Dumon, Pieter; Thourhout, Dries Van; Bogaerts, Wim

doi:10.1109/group4.2013.6644475

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…6 and 7 show the measured spectral responses of 16×200 GHz and 16×400 GHz AWGs using 5 nm and 1 nm grid snapping. For the 16×400 GHz AWGs the crosstalk floor drops from −21 dB (for the 5 nm grid) to −26 dB (for the 1 nm grid) [14]. For the 16×200 GHz AWGs the crosstalk floor drops from −19.8 dB (for the 5 nm grid) to −22.5 dB (for the 1 nm grid).…”

Section: Designmentioning

confidence: 92%

Effect of Mask Discretization on Performance of Silicon Arrayed Waveguide Gratings

Pathak

Vanslembrouck

Dumon

et al. 2014

IEEE Photon. Technol. Lett.

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Abstract-We studied the impact of the lithography mask discretization on silicon arrayed waveguide grating (AWG) performance. When we decreased the mask grid from 5 to 1 nm, we observed an experimental improvement in crosstalk of 2.7-6 dB and cumulative crosstalk improvement of 1.2-5 dB, depending on the wavelength channel spacing and the number of output channels. We demonstrate the effect for the AWGs with 200-and 400-GHz channel spacing, with 4, 8, and 16 output wavelength channels. With 1-nm mask grid, the average crosstalk is −26 and −23 dB for 400-and 200-GHz devices, respectively. This is the lowest crosstalk for silicon AWGs reported to the best of our knowledge. A simulation study is performed by looking specifically at phase errors due to mask grid snapping (ignoring other phase error sources), which shows an expected improvement in crosstalk of 12 dB.

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Section: Designmentioning

confidence: 92%

Effect of Mask Discretization on Performance of Silicon Arrayed Waveguide Gratings

Pathak

Vanslembrouck

Dumon

et al. 2014

IEEE Photon. Technol. Lett.

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“…This device is a widely used component in Wavelength Division Multiplexing (WDM) systems, and its use has expanded in other fields like signal processing, sensing and spectroscopy. SOI-based AWG are very compact, and becoming increasingly efficient [11]. An AWG wavelength demultiplexer with a single input and multiple outputs can be used as a peakdetection spectrometer: by measuring the power in the different output channels the location of a wavelength peak can be determined with such method the raw resolution is approximately the output channel spacing.…”

Section: Introductionmentioning

confidence: 99%

Silicon Photonic Spectrometer for Accurate Peak Detection Using the Vernier Effect and Time-Domain Multiplexing

Ruocco

Thourhout

Bogaerts

2014

J. Lightwave Technol.

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Abstract-We present a silicon-on-insulator spectrometer for wavelength peak detection operating in a 20-nm wavelength band around 1550 nm with an average accuracy of 12 pm. The silicon photonic integrated circuit occupies a footprint of 250 × 700 μm 2 and is composed of a passive-arrayed waveguide grating (AWG) and an array of thermo-optic Mach-Zehnder interferometer switches. The AWG multiplexes multiple inputs and outputs with a vernier design that shifts the spectral response of the different inputs. In this demonstration, we use five output channels and four input channels, with a 4.0-nm channel spacing and 5.0-nm channel spacing, respectively. The responses to the different inputs are disentangled at the outputs by time-multiplexing the inputs with the switches. We demonstrate a more than tenfold improvement in peak detection accuracy using the Vernier effect, from nm range using a single input to picometers range using the four inputs.

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Wavelength-Division-Multiplexing Devices in Thin SOI: Advances and Prospects

Okamoto¹

2014

IEEE J. Select. Topics Quantum Electron.

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Effect of mask grid on SOI arrayed waveguide grating performance

Abstract: Abstract-We studied the impact of the lithography mask grid on the performance of silicon AWGs, and show a dramatic improvement in crosstalk of 5dB when going from a 5nm to a 1nm grid.

Cited by 3 publications

References 9 publications

Effect of Mask Discretization on Performance of Silicon Arrayed Waveguide Gratings

Effect of Mask Discretization on Performance of Silicon Arrayed Waveguide Gratings

Silicon Photonic Spectrometer for Accurate Peak Detection Using the Vernier Effect and Time-Domain Multiplexing

Wavelength-Division-Multiplexing Devices in Thin SOI: Advances and Prospects

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