Invited Papers

Monday, May 31st

8

OS-B-MON-01-01

Fourier-Transform Infrared spectroscopy versus antibodies chemiluminescent immunoassay for COVID-19 diagnosis

Invited Paper

Herculano da Silva Martinho (UFABC); José Angelo Lauletta Lindoso (USP); Paulo Henrique Braz da Silva (USP); Carla Carolina Bandeira (UFABC)

14:30 to 15:00  ·  Room 1 (Live)  ·  Biophotonics 1

COVID-19 is a World sanitary emergency. The tragedy related to this epidemic disease evolves actually more than 100 million confirmed cases and at least 2 million deaths. In this work we investigate whether FTIR operating under blood serum samples is viable option for COVID-19 diagnosis and fatality prediction. The performance of FTIR was compared to chemiluminescence immunoassay for anti-SARS-CoV-2 IgM and IgG antibodies in order to discuss vantages and advantages and viability for point-of-care applications

Presented by

Herculano da Silva Martinho (UFABC)

11

OS-B-MON-02-01

Invited Paper

Vladislav V. Yakovlev (Texas AM&U)

16:00 to 16:30  ·  Room 1 (Live)  ·  Biophotonics 2

Presented by

Vladislav V. Yakovlev (Texas AM&U)

12

OS-B-MON-02-02

Invited Paper

Robinson Sabino da Silva (UFU)

16:30 to 17:00  ·  Room 1 (Live)  ·  Biophotonics 2

Presented by

Robinson Sabino da Silva (UFU)

15

OS-C-MON-01-01

Recent advances in machine learning-enabled inverse system design

Invited Paper

Uiara Celine de Moura (DTU Fotonik)

14:30 to 15:00  ·  Room 2 (Live)  ·  Optical Communication 1

The traditional procedure to design optical devices consists of starting with an initial set of parameters (normally based on the designer's previous knowledge) and performing some parameter sweep around the initial condition to improve the device performance. This human-controlled design approach has two key drawbacks: it is time-consuming/work-intensive and tends to ignore solutions that could have better performance but are far from the initial guess. Based on the idea that the underlying features in a given data set can be automatically learned through specific algorithms, machine learning techniques have been successfully applied in optical communication systems and integrated photonics. They are employed to learn complex functions and perform the...

Presented by

Uiara Celine de Moura (DTU Fotonik)

18

OS-C-MON-02-01

FEC-assisted Nonlinearity Compensation for Coherent Optical Receivers

Invited Paper

Edson Porto da Silva (UFCG)

16:00 to 16:30  ·  Room 2 (Live)  ·  Optical Communication 2

An overview of the FEC-assisted digital signal processing (DSP) techniques for fiber nonlinearity compensation (NLC) in coherent optical receivers is presented, with focus on DSP schemes that are able to improve the performance of NLC by using hard or soft information feedback from FEC-decoders. Challenges and new research directions are discussed.

Presented by

Edson Porto da Silva (UFCG)

Tuesday, June 1st

44

OS-L-TUE-01-01

Experimental optimization of quasimonoenergetic electron bunches in the self-modulated laser wakefield acceleration regime

Invited Paper

Nilson Dias Vieira Junior (IPEN); Ricardo E. Samad (IPEN)

14:30 to 15:00  ·  Room 1 (Live)  ·  Lasers 1

Recently, lasers with peak power on the TW level operating at 1 kHz have been used to produce quasimonoenergetic electron beams with good quality and energy in the 15 MeV range, by laser wakefield acceleration (LWFA). Due to the fast growth of the repetition rates of this class of lasers, practical applications such as the production of gamma rays to initiate photofission nuclear reactions, in order to produce medical systems, capable of matching the resonant acceleration conditions (few-fs, several-mJ pulses), are now available.

Presented by

Nilson Dias Vieira Junior (IPEN)

47

OS-L-TUE-02-01

Invited Paper

Raul de Oliveira Freitas (National Synchrotron Light Laboratory (LNLS), Br)

16:00 to 16:30  ·  Room 1 (Live)  ·  Lasers 2

Presented by

Raul de Oliveira Freitas (National Synchrotron Light Laboratory (LNLS), Br)

50

OS-I-TUE-01-01

Invited Paper

Marko Loncar (Harvard College)

14:30 to 15:00  ·  Room 2 (Live)  ·  Integrated Photonics and Optoelectronics 1

Presented by

Marko Loncar (Harvard College)

53

OS-I-TUE-02-01

Invited Paper

Christiano Matos (Mackenzie)

16:00 to 16:30  ·  Room 2 (Live)  ·  Integrated Photonics and Optoelectronics 2

Presented by

Christiano Matos (Mackenzie)

Wednesday, June 2nd

79

OS-S-WED-01-01

Metalenses with wide field of view and diffraction limited resolution: concepts and trade-offs

Invited Paper

Emiliano Rezende Martins (USP)

14:30 to 15:00  ·  Room 1 (Live)  ·  Sensors, Image and Illumination 1

Metasurfaces are nanostructured planar surfaces designed to control the phase and amplitude of an optical beam. They can be designed as a metalens, which finds widespread applications. Metalenses can be readily designed to obtain diffraction limited resolution, or as fisheye-type lenses with arbitrarily wide field of view. One of their main challenges, however, is to reduce all the aberrations in a single design. This paper compares the main physical constraints behind two of the most important monochromatic aberrations: spherical aberrations and off-axis aberrations. In the talk, novel routes to controlling the aberration will be presented.

Presented by

Emiliano Rezende Martins (USP)

82

OS-S-WED-02-01

Cascaded refractive index and corrosion sensors in a D-Shaped optical fiber using LMR and SPR effects

Invited Paper

Vladimir Manoel da Silva Jr (UFPE); Joaquim F. Martins Filho (UFPE); Jehan Nascimento (UFPE)

16:00 to 16:30  ·  Room 1 (Live)  ·  Sensors, Image and Illumination 2

This article presents the proposed structure and simulation results from analytical modeling of a refractive index sensor and a corrosion sensor in a D-shaped single-mode optical fiber using the lossy mode resonance (LMR) and surface plasmon resonance (SPR) effects. The combined sensor consists of two cascaded D-shaped sensor regions. The first one, a bilayer of titanium dioxide – aluminum, operates under LMR condition. The second region, a bilayer of gold – titanium dioxide, operates under SPR condition. The sensors are interrogated by two wavelengths, 1310 and 1550 nm, in TE and TM modes. Sensor sensitivities and operating ranges are presented.

Presented by

Joaquim F. Martins Filho (UFPE)

85

OS-O-WED-01-01

An extended cavity diode laser constructed with additive manufacturing: Contribution for a brazilian compact atomic frequency standard with cold atoms

Invited Paper

Eduardo Cazarini (IFSP Araraquara); Stela Müller (USP); Luiz Damaceno (USP); Richard Mascarin (USP); Carlos Fortulan (USP); Vanderlei Bagnato (USP); Daniel Varela Magalhães (USP)

14:30 to 15:00  ·  Room 2 (Live)  ·  Optics and Instrumentation 1

The Time and Frequency Metrology field dedicated towards more compact standards has research groups dedicated to cold atoms systems, in order to improve embedded applications. Our group has been developing a compact system using 133Cs cold atoms and already showed some versions of proof-of-principle. We developed a first prototype of an extended cavity diode laser using additive manufacturing of ABS (acrylonitrile butadiene styrene) and obtained a very light and thermally isolated version with an intracavity interference filter. We will show preliminary results of this first version and discuss some aspects of the system for the new compact frequency standard.

Presented by

Daniel Varela Magalhães (USP)

88

OS-O-WED-02-01

Nonlinear imaging of biological tissues

Invited Paper

Ana Maria de Paula (UFMG)

16:00 to 16:30  ·  Room 2 (Live)  ·  Optics and Instrumentation 2

Precise diagnosis and prognosis are important in prevention and reduction of morbidity and mortality in all types of cancers. We present imaging of biological tissue by second harmonic generation and multiphoton excited fluorescence microscopy as a potential tool in helping with cancer diagnosis. We demonstrate a methodology to evaluate the changes caused by cancer in collagen and cellular parameters of histological biopsies using automated image analysis and machine learning techniques. The procedure allowed to separate between the healthy and cancerous tissue with an accuracy of around 90% for canine mammary cancer and for human prostate cancer. In addition the results for canine mammary gland carcinomas show that the measured tissue collagen parameters...

Presented by

Ana Maria de Paula (UFMG)

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The Brazilian Photonics Society has begun its activities on May 24th, 2017 with the main objective to work for increasing the importance and awareness of optics and photonics in Brazil and South America.

To contact SBFoton and take active part in this movement, send an email to conference@sbfoton.org.br.

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