Optical 4x4 hitless slicon router for optical networks-on-chip (NoC)

Abstract

We demonstrate here a spatially non-blocking optical 4x4 router with a footprint of 0.07 mm(2) for use in future integrated photonic interconnection networks. The device is dynamically switched using thermo-optically tuned silicon microring resonators with a wavelength shift to power ratio of 0.25nm/mW. The design can route four optical inputs to four outputs with individual bandwidths of up to 38.5 GHz. All tested configurations successfully routed a single-wavelength laser and provided a maximum extinction ratio larger than 20 dB.

WDM-compatible mode-division multiplexing on a silicon chip

“…We also include an integrated heater on top of each microring to tune the microring resonances to align to the WDM channels and thereby optimize the performance of the device 32 . This design can be easily modified to handle additional phase-matched modes by widening the multimode waveguide (Fig.…”

Ge-on-Si photonic devices for photonic-electronic integration on a Si platform

“…However, for the ring/disk devices, the operation wavelength is limited only at around the resonance wavelengths. The large thermo-optic effect in Si also leads to a poor stability of resonance wavelength against temperature variations, although heaters have been implemented to stabilize the operation wavelength [73] in spite of the additional energy consumption. The use of slow light in photonic crystal WGs has been also investigated for the reduced size of Si EO modulators [74].…”

Architectural study of reconfigurable photonic Networks-on-Chip for multi-core processors

“…1, we show the result of power consumption estimates for the interprocessor communication. We used the same parameters as cited in [9], i.e. 0.83 pJ/bit for routing through a hop, 0.57 pJ/bit for the electrical links and we assumed 0.5 pJ/bit for the photonic channels.…”