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Resonant Microwave Photonic devices and systems

Microwave Photonics uses a coherent combination of microwave engineering and photonics to tackle problems
and tasks that are usually impossible or very difficult to solve and achieve using only one of these disciplines. We design and develop novel microwave photonics systems based on microwave and optical resonators for applications in RF/microwave communication, RF-over-fiber communication and Biophotonics.

WGM optical modulator

Optical modulation is one of the most important functions in photonic systems.
In particular
external electro-optical modulators are key components in RF-photonics systems and RF-over -fiber (RoF) communication links. Optimization of the main parameters of these modulators (loss, sensitivity, size, bandwidth) have been the subject of intensive research for many years.
We explore new configurations, materials and concepts that may enable more efficient interaction between RF/microwave fields and optical fields.
Using the fundamental physics behind electro-optic interaction, principles of microwave/photonic device engineering,
and high-Q WGM optical microresonators we have designed and demonstrated a new class of resonant electro-optic modulators.

-D.A. Cohen, M. Hossein-Zadeh, and A. F. J. Levi “High-Q microphotonic electro-optic modulator” ,            
  Solid-State Electronics, 45(9), pp. 1577-1589, Sep 2001.  
-D.A. Cohen, M. Hossein-Zadeh, and A. F. J. Levi “Microphotonic modulator for microwave receiver”,
  Electronics Letters, 37(5), pp. 300-301, March 2001.
M. Hossein-Zadeh, and A. F. J. Levi, “Mb/s data transmission over a RF fiber-Optic link using a LiNbO3 microdisk optical modulator ,  
 Solid-State Electronics
, 46(12), pp. 2173-2178, Dec 2002.
-M. Hossein-Zadeh, and A. F. J. Levi, "Ring resonator-based photonic microwave receiver modulator with picowatt sensitivity,
IET Optoelectronics, vol. 5, no. 1, pp. 36-39, May 2011.

Photonic Microwave Receiver (PMR)
A photonic microwave receiver uses photonic components (lasers, photodiodes,
modulators, microresonators, filters, ...) to replicate the function of a microwave receiver. In a PMR the microwave signal is first up-converted to optical domain and  baseband signal is extracted from the microwave carrier using photonic signal processing. At the end the electronic baseband signal is generated in a photodiode. The main objective in PMS design is to replace
the high-speed electronic components (low-noise amplifier, mixers, filters) with photonic elements to improve the performance of the receiver in microwave/millimeter wave regime and in the mean time reduce the power consumption and volume.  

-M. Hossein-Zadeh, and A. F. J. Levi, “14.6 GHz LiNbO3 microdisk photonic self-homodyne RF receiver”, 
  IEEE Microwave Theory and Techniques - special issue on Microwave Photonics, vol. 54(2)-part 2,pp. 821-831, Feb 2006.  
-M. Hossein-Zadeh, and A. F. J. Levi, “Self-homodyne RF-optical LiNbO3 microdisk receiver”,
  Solid-State Electronics, 49(8), pp. 1428-1434, Aug 2005.

-M. Hossein-Zadeh, and A. F. J. Levi, “Self-homodyne photonic microwave receiver architecture based on optical modulation and filtering,   
  Microwave and Optical Technology Letters, vol. 50, no. 2, pp. 345-350, Feb 2008.

Photonic control of microwave devices

 The high-frequency electronic properties of certain materials can be controlled by light. We explore new designs that can exploit this property for different applications.

-M. Shirazi Hosseinidokht,
and M. Hossein-Zadeh, "Low Power Photonic Control of RF resonance Using Bulk Illumination",
Microwave and Optical Technology Letters, vol. 55, no. 7, pp. 1594-1599, July 2013.