Ultra-sensitive slot-waveguide-enhanced Raman spectroscopy for aqueous solutions of non-polar compounds using a functionalized silicon nitride photonic integrated circuit

2021 ◽  
Vol 46 (5) ◽  
pp. 1153
Author(s):  
Zuyang Liu ◽  
Haolan Zhao ◽  
Bettina Baumgartner ◽  
Bernhard Lendl ◽  
Andim Stassen ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Silicon Nitride ◽  
Aqueous Solutions ◽  
Integrated Circuit ◽  
Polar Compounds ◽  
Slot Waveguide ◽  
Photonic Integrated Circuit

Vertical mode transition in hybrid lithium niobate and silicon nitride-based photonic integrated circuit structures

2018 ◽  
Vol 43 (17) ◽  
pp. 4140 ◽  
Author(s):  
Abu Naim R. Ahmed ◽  
Andrew Mercante ◽  
Shouyuan Shi ◽  
Peng Yao ◽  
Dennis W. Prather
Keyword(s):  
Silicon Nitride ◽  
Lithium Niobate ◽  
Integrated Circuit ◽  
Mode Transition ◽  
Photonic Integrated Circuit ◽  
Vertical Mode

scholarly journals True Time Delay Optical Beamforming Network Based on Hybrid InP-Silicon Nitride Integration

2021 ◽  
Author(s):  
Christos Tsokos ◽  
Efstathios Andrianopoulos ◽  
Adam Raptakis ◽  
Nikolaos Lyras ◽  
Lefteris Gounaridis ◽  
...  
Keyword(s):  
Silicon Nitride ◽  
Time Delay ◽  
Integrated Circuit ◽  
Dynamic Range ◽  
Noise Figure ◽  
External Cavity ◽  
External Cavity Laser ◽  
Photonic Integrated Circuit ◽  
True Time Delay ◽  
True Time

<div>We demonstrate a broadband and continuously tunable 1×4 optical beamforming network (OBFN), based on the hybrid integration of indium phosphide (InP) components in the silicon nitride (Si3N4) platform. The photonic integrated circuit (PIC) comprises a hybrid InP-Si3N4 external cavity laser, a pair of InP phase modulators, a Si3N4 optical single-sideband full carrier (SSBFC) filter followed by four tunable optical true time delay lines (OTTDLs), and four InP photodetectors. The performance of the OBFN-PIC is experimentally characterized by measuring the link gain, noise figure, and spurious free dynamic range of the microwave photonics links. Moreover, we assess its beamforming capabilities assuming that the OBFN-PIC is part of a wireless system operating in the downlink direction and feeds a multielement antenna array. Using microwave signals at 5 and 10 GHz with quadrature amplitude modulation (QAM) formats at 500 Mbaud, we evaluate the performance of the OBFN-PIC under various configurations. An error-free performance is achieved for all the experimental cases validating the potential of the proposed OBFN-PIC for high-quality beamforming performance. To our best of knowledge, this is the first thorough performance evaluation of a fully integrated OBFN-PIC.</div>

scholarly journals Ultra-sensitive silicon nitride waveguide-enhanced Raman spectroscopy for aqueous solutions of organic compounds

2020 ◽  
Author(s):  
Zuyang Liu ◽  
Haolan Zhao ◽  
Bettina Baumgartner ◽  
Bernhard Lendl ◽  
Andre Skirtach ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Silicon Nitride ◽  
Aqueous Solutions ◽  
Organic Compounds

scholarly journals True Time Delay Optical Beamforming Network Based on Hybrid InP-Silicon Nitride Integration

2021 ◽  
Author(s):  
Christos Tsokos ◽  
Efstathios Andrianopoulos ◽  
Adam Raptakis ◽  
Nikolaos Lyras ◽  
Lefteris Gounaridis ◽  
...  
Keyword(s):  
Silicon Nitride ◽  
Time Delay ◽  
Integrated Circuit ◽  
Dynamic Range ◽  
Noise Figure ◽  
External Cavity ◽  
External Cavity Laser ◽  
Photonic Integrated Circuit ◽  
True Time Delay ◽  
True Time

<div>We demonstrate a broadband and continuously tunable 1×4 optical beamforming network (OBFN), based on the hybrid integration of indium phosphide (InP) components in the silicon nitride (Si3N4) platform. The photonic integrated circuit (PIC) comprises a hybrid InP-Si3N4 external cavity laser, a pair of InP phase modulators, a Si3N4 optical single-sideband full carrier (SSBFC) filter followed by four tunable optical true time delay lines (OTTDLs), and four InP photodetectors. The performance of the OBFN-PIC is experimentally characterized by measuring the link gain, noise figure, and spurious free dynamic range of the microwave photonics links. Moreover, we assess its beamforming capabilities assuming that the OBFN-PIC is part of a wireless system operating in the downlink direction and feeds a multielement antenna array. Using microwave signals at 5 and 10 GHz with quadrature amplitude modulation (QAM) formats at 500 Mbaud, we evaluate the performance of the OBFN-PIC under various configurations. An error-free performance is achieved for all the experimental cases validating the potential of the proposed OBFN-PIC for high-quality beamforming performance. To our best of knowledge, this is the first thorough performance evaluation of a fully integrated OBFN-PIC.</div>

Realizing topological edge states in a silicon nitride microring-based photonic integrated circuit

2016 ◽  
Vol 41 (20) ◽  
pp. 4791 ◽  
Author(s):  
Chenxuan Yin ◽  
Yujie Chen ◽  
Xiaohui Jiang ◽  
Yanfeng Zhang ◽  
Zengkai Shao ◽  
...  
Keyword(s):  
Silicon Nitride ◽  
Integrated Circuit ◽  
Edge States ◽  
Photonic Integrated Circuit

Flexible silicon nitride photonic integrated circuit embedded in polymer handle

2019 ◽  
Author(s):  
Rakshitha Kallega ◽  
Siddharth Nambiar ◽  
Sandeep Kalathimekkad ◽  
Viphretuo Mere ◽  
Shankar Kumar Selvaraja
Keyword(s):  
Silicon Nitride ◽  
Integrated Circuit ◽  
Photonic Integrated Circuit

A low-loss SiN photonic integrated circuit foundry platform for waveguide-enhanced Raman spectroscopy

2021 ◽  
Author(s):  
Nathan Tyndall ◽  
Todd H. Stievater ◽  
Dmitry A. Kozak ◽  
Marcel W. Pruessner ◽  
William S. Rabinovich ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Integrated Circuit ◽  
Low Loss ◽  
Photonic Integrated Circuit

scholarly journals Photonic integrated circuits for life sciences

2021 ◽  
Author(s):  
Jeremy Witzens ◽  
Patrick Leisching ◽  
Alireza Tabatabaei Mashayekh ◽  
Thomas Klos ◽  
Sina Koch ◽  
...  
Keyword(s):  
Silicon Nitride ◽  
Confocal Microscopy ◽  
Integrated Circuits ◽  
Integrated Circuit ◽  
Photonic Integrated Circuits ◽  
Fluorescent Microscopy ◽  
Visible Spectral Range ◽  
Stimulated Emission ◽  
Core Element ◽  
Photonic Integrated Circuit

A large number of discrete optical components could be replaced by a photonic integrated circuit in a multi-color laser engine for the visible spectral range. The photonic integrated circuit is based on silicon nitride waveguide technology. We report on the use of silicon nitride (SiN) photonic integrated circuits (PICs) in high-value instrumentation, namely multi-color laser engines (MLEs), a core element of cutting-edge biophotonic systems applied to confocal microscopy, fluorescent microscopy - including super-resolution stimulated emission depletion (STED) microscopy - flow cytometry, optogenetics, genetic analysis and DNA sequencing, to name just a few. These have in common the selective optical excitation of molecules - fluorophores, or, in the case of optogenetics, light-gated ion channels - with laser radiation falling within their absorption spectrum. Unambiguous identification of molecules or cellular subsets often requires jointly analyzing fluorescent signals from several fluorescent markers, so that MLEs are required to provide excitation wavelengths for several commercially available biocompatible fluorophores. A number of functionalities are required from MLEs in addition to sourcing the required wavelengths: Variable attenuation and/or digital intensity modulation in the Hz to kHz range are required for a number of applications such as optical trapping, lifetime imaging, or fluorescence recovery after photobleaching (FRAP). Moreover, switching of the laser between two fiber outputs can be utilized for example to switch between scanning confocal microscopy and widefield illumination modes, for instance, for conventional fluorescence imaging.

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