Automated Routing and Control of Silicon Photonic Switch Fabrics

Abstract

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Programmable optical processor chips: toward photonic RF filters with DSP-level flexibility and MHz-band selectivity

“…Several representative examples have been demonstrated. In [121], automatic reconfiguration and optical routing of a silicon photonic switch fabric based on Mach-Zehnder interferometers (MZIs) are illustrated, where CLIPPs provide real-time information on the routing path, allowing an easy sequential tuning and feedback controlled stabilization of the individual switching elements. In [122,123], a work on spatial reconfigurable add-drop multiplexers is presented, having the splitters and combiners controlled via a simple algorithm implementable using a local electronic feedback loop.…”

On-Chip OSNR Monitoring With Silicon Photonics Transparent Detector

“…To this aim, on the transmitter side, the channel is intensity modulated with a frequency f q below the reading frequency of the CLIPP [2]. To not degrade the performance of the transmitted channel, a low modulation index µ (< 8%) shall be used [8].…”

“…1a). The signal labeling can be performed either directly on-chip, by using thermally tuned MZ modulators [2] or with external modulators close to the transmitter.…”

“…Integrated detectors allow for diverse functions on a chip including, but not limited to, routing and switching of optical channels [1], [2], self configuring PICs [3], thermal tuning and wavelength locking of filters and modulators [4], [5]. In practical applications, most of these functions require the identification, monitoring and manipulation of optical signals regardless of the presence of other channels and/or optical noise.…”

Wavelength Locking of Silicon Photonics Multiplexer for DML-Based WDM Transmitter

“…operation of reconfigurable circuits that integrate many components and deliver complex functionalities [4][5][6][7][8][9].…”