Hamed Sattari

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Related publications (30)

Compact broadband suspended silicon photonic directional coupler

Niels Quack, Hamed Sattari, Alain Yuji Takabayashi, Yu Zhang

Directional couplers are extensively used in photonic integrated circuits as basic components for efficient on-chip photonic signal routing. Conventionally, directional couplers are fully encapsulated in the technology's waveguide cladding material. In thi ...

OPTICAL SOC AMER2020

MEMS-Enabled Silicon Photonic Integrated Devices and Circuits

Niels Quack, Hamed Sattari, Alain Yuji Takabayashi, Yu Zhang

Photonic integrated circuits have seen a dramatic increase in complexity over the past decades. This development has been spurred by recent applications in datacenter communications and enabled by the availability of standardized mature technology platform ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2020

Compact low loss MEMS phase shifters for scalable field-programmable silicon photonics

Niels Quack, Hamed Sattari, Alain Yuji Takabayashi

MEMS offer low power tunability to silicon photonics. However, reported phase shifters lack in range, IL, or linearity. We show pi linear phase shift in compact, 0.2 dB-IL MEMS devices, and demonstrate trade-offs for scalability. (C) 2020 The Author(s) ...

IEEE2020

Freestanding Silicon Photonic Ring and Disk Resonators

Niels Quack, Hamed Sattari, Alain Yuji Takabayashi, Yu Zhang

We report freestanding silicon photonic ring and disk resonators fabricated in a simplified silicon photonics process based on IMEC's iSiPP5OG standard platform that have been released by a custom MEMS post-processing step. Experimental results show high o ...

IEEE2019

Silicon Photonic Broadband Suspended Directional Coupler

Niels Quack, Hamed Sattari, Alain Yuji Takabayashi, Yu Zhang

We demonstrate a broadband Silicon Photonic directional coupler that is entirely suspended in air. The device has been fabricated in a simplified Silicon Photonics process based on the standard IMEC ISIPP5OG platform, combined with custom post-processing i ...

IEEE2019

Silicon Photonic MEMS: Exploiting Mechanics at the Nanoscale to Enhance Photonic Integrated Circuits

Niels Quack, Banafsheh Abasahl, Shiv Ashish Kumar, Hamed Sattari, Alain Yuji Takabayashi, Yu Zhang

With the maturing and the increasing complexity of Silicon Photonics technology, novel avenues are pursued to reduce power consumption and to provide enhanced functionality: exploiting mechanical movement in advanced Silicon Photonic Integrated Circuits pr ...

IEEE2019

Silicon Photonic MEMS Phase-Shifter

Niels Quack, Marcell Kristof Kiss, Teodoro Graziosi, Hamed Sattari

We present a design for an analog phase shifter based on Silicon Photonic MEMS technology. The operation principle is based on a two-step parallel plate electrostatic actuation mechanism to bring a vertically movable suspended tapered waveguide in a first ...

2019

Precision micro-mechanical components in single crystal diamond by deep reactive ion etching

Niels Quack, Teodoro Graziosi, Hamed Sattari

Nature Publishing Group2018

Silicon photonic MEMS variable optical attenuator

Niels Quack, Teodoro Graziosi, Hamed Sattari

We present a design for an on-chip MEMS-actuated Variable Optical Attenuator (VOA) based on Silicon Photonic MEMS technology. The VOA consists of 30 individual mechanically movable MEMS cantilevers, suspended over an integrated, 1 mu m wide bus waveguide, ...

SPIE-INT SOC OPTICAL ENGINEERING2018

Utilizing electromagnetically induced transparency in InAs quantum dots for all-optical transistor design

Hamed Sattari

We propose a multilayer medium with semiconductor quantum dot nano-structures as a defect layer for all-optical control of the 1.55 mu m probe beam. The effect of the coupling field and incoherent pump on absorption and dispersion properties of the quantum ...

Optical Soc Amer2017

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