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Photonic devices for optical processing, communication and sensing

Photonic devices for optical processing, communication and sensing. Shlomo Ruschin Tel-Aviv University. Tubular dye-polymer waveguides embedded in silicon. Air. Air. SiO 2. Air. Air. SiO 2. Si. Si. a.). b.). Figure 6.- 5 Result of dry oxidation of the etched silicon rounded holes:

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Photonic devices for optical processing, communication and sensing

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  1. Photonic devices for optical processing, communication and sensing Shlomo Ruschin Tel-Aviv University

  2. Tubular dye-polymer waveguides embedded in silicon

  3. Air Air SiO2 Air Air SiO2 Si Si a.) b.) Figure 6.- 5 Result of dry oxidation of the etched silicon rounded holes: a.) before oxidation; b.) after oxidation. Tubular dye-polymer waveguides embedded in silicon

  4. Tel-Aviv University Porous Silicon Optical Sensors Tanya Hutter and Shlomo Ruschin Integrated Optics Group Tel-Aviv University

  5. Optical remote sensor network

  6. Ammonia storage warehouse ALARM ! NH3 NH3 NH3 NH3 NH3 NH3 Motivation (1) porous silicon sensors Light source and receiving fiber PSi Sensors ADVANTAGES: • Cheap • Small • Remote • Passive (can be used in flammable environment)

  7. Multi-Sensing Principle • Sensor array concept. • Each section is made of porous silicon with a different functionality. • White light is collimated to illuminate the entire sample. • The reflected light from all the sections is measured simultaneously in a non-imaging configuration using a single detector. • The obtained spectrum consists of many overlapping interference spectra each reflected from a different sensor section.

  8. Multi-Sensing Principle Gas out Porous silicon surface Gas in

  9. METHODS FOR INCREASING RELIABILITY IN GAS DETECTION BASED ON INDCATOR GRADIENT IN A SENSOR ARRAY

  10. Device and method for creating sub-wavelength sized light spots with increased depth of field

  11. Device and method for creating sub-wavelength sized light spots with increased depth of field

  12. OPTICAL DIGITAL-TO-ANALOG CONVERSIONUSINGMULTI-ELECTRODE MACH-ZEHNDER MODULATOR

  13. Full-Dynamic Range Optical DAC Digital-To-Digital Conversion Electrodes lengths is NOT interrelated by factor of 2 Number of electrodes M>N

  14. Theoretical Performance 4 bit DAC (Cont.) Duplicate Levels • N=4, M=4

  15. Photonic D/A converter

  16. X0 X1 B1i . . Di IDFT P/S DDC Laser XNC-2 XNC-1 Fiber B2i DSP Optics ME-MZM Conceptual Coherent Optical OFDM Transmitter Our proposal

  17. Critical sensitivity effect in an interferometer sensor Ronen Levy, Shlomo Ruschin*, and Damian Goldring

  18. Critical sensitivity effect in an interferometer sensor Ronen Levy, Shlomo Ruschin*, and Damian Goldring Splitting effect Sensor output power for the scanned wavelength range without illumination (Blue, solid line) and with illumination (Green, dashed line).

  19. Sensors based on frequency determination in active optical waveguides

  20. Concept Sensor l Pump Architecture & detection scheme Suitable for both remote sensing & biomedical device

  21. Monolithic rare-earth doped sol-gel tapered rib waveguide laser Nd-doped tapered rib waveguide laser- schematic view, not drawn to scale for clarity

  22. Output lasing power as a function of input pump power for different pump wavelengths Emission spectra of the laser device for different input pump powers.

  23. Patents by Shlomo Ruschin (Inventor)

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