Mach-Zehnder-based 1×16 multiplexer in SOI and analysis of phase noise properties

Preite, Massimo Valerio; Velha, Philippe; Lemonnier, Olivier; Kopp, Christophe; Pasquale, F. Di; Otón, Claudio J.

doi:10.1364/ofc.2018.m4h.3

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…Better results could be expected by using 300 mm SOI wafers due to the more evolved silicon fabrication technology [17]. Alternatively, cascaded interleavers could be used to realize fully tunable demultiplexers [18]. Fig.…”

Section: Pic Fabrication and Performancementioning

confidence: 99%

“…The frequency swept signal is collected and integrated by a slow Ge photodiode placed at the output port of the interleaver. The optical power detected by the photodiode depends on two bias values (V 1 and V 2 ) applied to the heaters placed over the interleaver arms (first stage of the device presented in [18]). The optimal configuration is the one that maximizes the power coupled into the photodiode (see Fig.…”

Section: Calibrationmentioning

confidence: 99%

See 1 more Smart Citation

Integrated Reconfigurable Silicon Photonics Switch Matrix in IRIS Project: Technological Achievements and Experimental Results

Testa

Tondini

Gambini

et al. 2019

J. Lightwave Technol.

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Section: Pic Fabrication and Performancementioning

confidence: 99%

Section: Calibrationmentioning

confidence: 99%

Integrated Reconfigurable Silicon Photonics Switch Matrix in IRIS Project: Technological Achievements and Experimental Results

Testa

Tondini

Gambini

et al. 2019

J. Lightwave Technol.

Self Cite

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show abstract

“…At the input port, the optical signal is coupled into the photonic chip, through a single polarization grating coupler (SPGC). A multi-wavelength waveguide leads the signal to a de-interleaving stage (interleavers), which separates the channels into odd and even wavelengths (spacing relaxed to 400 GHz) [18]. Then, the two subsets of wavelengths move toward two 1 × 6 AWGs, which take the single optical channels apart into dedicated waveguides [19].…”

Section: Optical Switch Architecturementioning

confidence: 99%

Automatic Initialization Methods for Photonic Components on a Silicon-Based Optical Switch

et al. 2019

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In this work we showed the optimization of the spectral response of several optical elements in a silicon-based optical switch. Integrated thermal resistors induced a local heating of the components. The temperature increase, in turn, caused a thermal shift of the optical response of the component. In this manner, we aligned interleavers and micro-ring resonators to the International Telecommunication Union (ITU) channels, by using a stochastic method named Globalized Bounded Nelder-Mead (GBNM) to determine the proper temperatures. The optimization engine relied on the optical feedback from on-chip monitor photodiodes to drive these photonic elements into the wanted functioning condition. This method is suited for restoring the spectral response of optical elements impaired by fabrication inaccuracies. In the same way, it can be applied to tune in resonance active components, whose transfer function has one or more local optima. We proved the reliability of the GBNM method for the optimization of an integrated optical switch, with more than thousand optical components, each one interfaced with a thermal resistor driven by a dedicated electronic circuit. On the one hand, the GBNM guaranteed the automatic alignment of all active components on the chip, over multiple instances. On the other hand, the method allowed for the proper working of such a complex device.

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Modelling, characterization, and applications of silicon on insulator loop terminated asymmetric Mach Zehnder interferometer

Shamy

Afifi

Badr

et al. 2022

Sci Rep

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This work presents a loop terminated asymmetric Mach–Zehnder interferometer (LT-aMZI) structure based on the widespread silicon-on-insulator (SOI) platform. Four different path length differences of the LT-aMZI, which correspond to free spectral ranges (FSR) from 0.8 to 6.4 nm, are designed. These designs are compared to the common asymmetric Mach–Zehnder interferometer (C-aMZI) and are shown to be more compact. These devices are suitable for optical filtering as well as wavelength demultiplexing (WDM) applications. A compact analytical model is derived that accurately describe the operation of the LT-MZI devices. The designs are then fabricated using Electron Beam Lithography (EBL) and characterized. The experimental data show good agreement when compared to the simulation results. To our knowledge, this is the first time LT-aMZI fabrication and characterization. Moreover, the LT-MZI spectrum can be tuned not only by the interferometer arms phase difference like C-MZI, but also by using its directional couplers coefficients, forming a spectral tunable filter. Finally, we determine the performance parameters of optical sensors and modulators and show that our proposed LT-MZI structure will enhance the sensor figure of merit (FOM) and modulator speed, power consumption and Vπ × L compared to C-MZI. A comparison between symmetric and asymmetric MZI sensors and the advantage of the latter is also mentioned.

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Mach-Zehnder-based 1×16 multiplexer in SOI and analysis of phase noise properties

Cited by 3 publications

References 6 publications

Integrated Reconfigurable Silicon Photonics Switch Matrix in IRIS Project: Technological Achievements and Experimental Results

Integrated Reconfigurable Silicon Photonics Switch Matrix in IRIS Project: Technological Achievements and Experimental Results

Automatic Initialization Methods for Photonic Components on a Silicon-Based Optical Switch

Modelling, characterization, and applications of silicon on insulator loop terminated asymmetric Mach Zehnder interferometer

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