scholarly journals Enhanced on-chip terahertz vibrational absorption spectroscopy using evanescent fields in silicon waveguide structures

2021 ◽  
Author(s):  
Hadi Amarloo ◽  
Safieddin Safavi-Naeini
Keyword(s):  
Absorption Spectroscopy ◽  
Vibrational Absorption ◽  
Silicon Waveguide ◽  
Evanescent Fields ◽  
On Chip

scholarly journals Topology Design of Digital Metamaterials for Ultra-Compact Integrated Photonic Devices Based on Mode Manipulation

2021 ◽  
Author(s):  
Han Ye ◽  
Yanrong Wang ◽  
Shuhe Zhang ◽  
Danshi Wang ◽  
Yumin Liu ◽  
...  
Keyword(s):  
Photonic Devices ◽  
Topology Design ◽  
Functional Region ◽  
Optical Interconnections ◽  
Silicon Waveguide ◽  
All Optical ◽  
On Chip ◽  
Mode Order

Precise manipulation of mode order in silicon waveguide plays a fundamental role in the on-chip all-optical interconnections and is still a tough task in design when the functional region is...

Graded-index fiber on-chip absorption spectroscopy

2021 ◽  
Author(s):  
Nicolas Riesen ◽  
Kamalpreet Gill ◽  
Craig Priest ◽  
Nicholas Phillips ◽  
Bin Guan ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Graded Index ◽  
On Chip

On-chip cavity-enhanced absorption spectroscopy using a white light-emitting diode and polymer mirrors

Lab on a Chip ◽  
2015 ◽  
Vol 15 (3) ◽  
pp. 711-717 ◽  
Author(s):  
Cathy M. Rushworth ◽  
Gareth Jones ◽  
Martin Fischlechner ◽  
Emma Walton ◽  
Hywel Morgan
Keyword(s):  
Absorption Spectroscopy ◽  
White Light ◽  
Microfluidic Chip ◽  
Path Length ◽  
Light Emitting Diode ◽  
Absorption Path Length ◽  
Light Emitting ◽  
Enhanced Absorption ◽  
Cavity Enhanced Absorption Spectroscopy ◽  
On Chip

We have integrated disposable polymer mirrors within a microfluidic chip to form a multi-pass cell, which increases the absorption path length by a maximum of 28 times, providing micromolar detection limits in a probed volume of 10 nL.

scholarly journals On-chip optical interconnection by using integrated III-V laser diode and photodetector with silicon waveguide

2010 ◽  
Vol 18 (15) ◽  
pp. 15440 ◽  
Author(s):  
Kazuya Ohira ◽  
Kentaro Kobayashi ◽  
Norio Iizuka ◽  
Haruhiko Yoshida ◽  
Mizunori Ezaki ◽  
...  
Keyword(s):  
Laser Diode ◽  
Optical Interconnection ◽  
Silicon Waveguide ◽  
On Chip

On-chip optical isolator based on unidirectional wavelength-mode conversion waveguide

2018 ◽  
Vol 32 (22) ◽  
pp. 1850258 ◽  
Author(s):  
Wenlong Liu ◽  
Xuebin Liu ◽  
Qiangqiang Yan ◽  
Simiao Qiang ◽  
Haifeng Pi ◽  
...  
Keyword(s):  
Fundamental Mode ◽  
Mode Conversion ◽  
Forward Direction ◽  
Light Signal ◽  
Necessary Condition ◽  
Order Mode ◽  
Optical Isolator ◽  
Silicon Waveguide ◽  
Time Space ◽  
On Chip

Breaking Lorentz reciprocity is one necessary condition of optical isolator design. Unidirectional wavelength-mode conversion will be realized in a time-dependent system through a short operating range. Based on plasma dispersion effect, generate space-asymmetric periodical time-space modulation on silicon waveguide, and non-reciprocal propagation is realized in the waveguide. The designed unidirectional wavelength-mode conversion waveguide demonstrated that in the forward direction, input 1.55 [Formula: see text]m fundamental mode light signal and then output 1.5492 [Formula: see text]m is of 1st-order mode, while in the backward direction, input 1.5492 [Formula: see text]m is of 1st-order mode light signal and then output 1.5484 [Formula: see text]m is of fundamental mode. Based on this non-reciprocal structure, mode conversion waveguide and two-ring resonance filters were designed then, to accomplish on-chip optical isolation. The scale of the designed isolator is 160 [Formula: see text]m × 60 [Formula: see text]m, and the isolation is 21 dB, revealing perfect application potential.

Efficient intersystem crossing in 2-aminopurine riboside probed by femtosecond time-resolved transient vibrational absorption spectroscopy

2018 ◽  
Vol 20 (30) ◽  
pp. 20033-20042 ◽  
Author(s):  
Hendrik Böhnke ◽  
Katharina Röttger ◽  
Rebecca A. Ingle ◽  
Hugo J. B. Marroux ◽  
Mats Bohnsack ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Intersystem Crossing ◽  
Time Resolved ◽  
Vibrational Absorption

The photophysical dynamics of 2-aminopurine, a fluorescent analogue of the canonical nucleobase adenine, has been studied by femtosecond transient vibrational absorption spectroscopy.

scholarly journals Cavity-enhanced on-chip absorption spectroscopy using microring resonators

2008 ◽  
Vol 16 (16) ◽  
pp. 11930 ◽  
Author(s):  
Arthur Nitkowski ◽  
Long Chen ◽  
Michal Lipson
Keyword(s):  
Absorption Spectroscopy ◽  
Microring Resonators ◽  
On Chip
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