The Experts below are selected from a list of 239310 Experts worldwide ranked by ideXlab platform

David Marpaung - One of the best experts on this subject based on the ideXlab platform.

  • low error and broadband microwave Frequency Measurement in a silicon chip
    Optica, 2015
    Co-Authors: Mattia Pagani, Blair Morrison, Yanbing Zhang, Alvaro Casasbedoya, Timo Aalto, Mikko Harjanne, Markku Kapulainen, Benjamin J Eggleton, David Marpaung
    Abstract:

    Instantaneous Frequency Measurement (IFM) of microwave signals is a fundamental functionality for applications ranging from electronic warfare to biomedical technology. Photonic techniques, and nonlinear optical interactions in particular, have the potential to broaden the Frequency Measurement range beyond the limits of electronic IFM systems. The key lies in efficiently harnessing optical mixing in an integrated nonlinear platform, with low losses. In this work, we exploit the low loss of a 35 cm long, thick silicon waveguide to efficiently harness Kerr nonlinearity and demonstrate, to the best of our knowledge, the first on-chip four-wave mixing-based IFM system. We achieve a large, 40 GHz Measurement bandwidth and a record-low Measurement error. Finally, we discuss the future prospect of integrating the whole IFM system on a silicon chip to enable the first reconfigurable, broadband IFM receiver with low latency.

  • low error and broadband microwave Frequency Measurement in a silicon chip
    arXiv: Optics, 2015
    Co-Authors: Mattia Pagani, Blair Morrison, Yanbing Zhang, Alvaro Casasbedoya, Timo Aalto, Mikko Harjanne, Markku Kapulainen, Benjamin J Eggleton, David Marpaung
    Abstract:

    Instantaneous Frequency Measurement (IFM) of microwave signals is a fundamental functionality for applications ranging from electronic warfare to biomedical technology. Photonic techniques, and nonlinear optical interactions in particular, have the potential to broaden the Frequency Measurement range beyond the limits of electronic IFM systems. The key lies in efficiently harnessing optical mixing in an integrated nonlinear platform, with low losses. In this work, we exploit the low loss of a 35 cm long, thick silicon waveguide, to efficiently harness Kerr nonlinearity, and demonstrate the first on-chip four-wave mixing (FWM) based IFM system. We achieve a large 40 GHz Measurement bandwidth and record-low Measurement error. Finally, we discuss the future prospect of integrating the whole IFM system on a silicon chip to enable the first reconfigurable, broadband IFM receiver with low-latency.

  • on chip photonic assisted instantaneous microwave Frequency Measurement system
    IEEE Photonics Technology Letters, 2013
    Co-Authors: David Marpaung
    Abstract:

    A novel instantaneous Frequency Measurement system based on a programmable photonic chip Frequency discriminator is experimentally demonstrated. The microwave signal whose Frequency is to be measured is used to modulate the phase of an optical carrier. An optical ring resonator (ORR) in an add-drop configuration is used as a phase-to-intensity modulation converter. By simultaneously using the through and drop outputs of the ORR, an amplitude comparison function (ACF) can be established. Using this ACF, Frequency estimation with a standard deviation of 93.6 MHz in the Frequency range of 0.5-4 GHz can be achieved. The ACF is fully programmable by tuning the ORR resonance. This is the first demonstration of an instantaneous Frequency Measurement system using a compact programmable photonic chip.

L V T Nguyen - One of the best experts on this subject based on the ideXlab platform.

  • microwave photonic technique for Frequency Measurement of simultaneous signals
    IEEE Photonics Technology Letters, 2009
    Co-Authors: L V T Nguyen
    Abstract:

    A novel microwave photonic Frequency Measurement (MPFM) receiver is reported. The technique directly maps the Frequency information of the incoming simultaneous signals to a distinct set of relative time delays utilizing a dispersive medium. The Measurement of the observed time delay directly equates to the value of the input signal Frequency. The operation of the MPFM receiver concept is successfully verified for two simultaneous signals at 20 and 40 GHz, demonstrating a potential capability for use in a spectrally cluttered environment.

  • a photonic technique for microwave Frequency Measurement
    IEEE Photonics Technology Letters, 2006
    Co-Authors: L V T Nguyen, D B Hunter
    Abstract:

    A novel photonic technique for microwave Frequency Measurement utilizing dispersion in a multichannel chirped fiber Bragg grating is presented. The technique is based on the amplitude comparison of power fading functions generated by double sideband modulated optical carriers propagating through a dispersive medium

Jianping Yao - One of the best experts on this subject based on the ideXlab platform.

  • instantaneous microwave Frequency Measurement using a photonic microwave filter pair
    IEEE Photonics Technology Letters, 2010
    Co-Authors: Shilong Pan, Jianping Yao
    Abstract:

    Photonics-assisted instantaneous microwave Frequency Measurement (IFM) has been a topic of interest recently. To perform IFM, an amplitude comparison function (ACF) that relates the microwave Frequency to the microwave powers by which the microwave Frequency can be estimated by measuring the microwave powers should be established. In this letter, a two-tap photonic microwave filter pair with complementary Frequency responses is employed for achieving IFM. Thanks to the complementary nature of the transfer functions of the filter pair, a quasi-linear monotonically decreasing ACF over a large Frequency band is obtained, which ensures an improved Measurement range and accuracy. An experiment is performed. A microwave Frequency Measurement range as large as 36 GHz with a Measurement accuracy better than ±0.2 GHz is experimentally demonstrated.

  • an optical approach to microwave Frequency Measurement with adjustable Measurement range and resolution
    IEEE Photonics Technology Letters, 2008
    Co-Authors: Xihua Zou, Jianping Yao
    Abstract:

    We propose an approach for the Measurement of microwave Frequency in the optical domain with adjustable Measurement range and resolution. In the proposed approach, two optical wavelengths with a large wavelength spacing are modulated by an unknown microwave signal in a Mach-Zehnder modulator (MZM). The optical output from the MZM is sent to a dispersive fiber to introduce different chromatic dispersions, leading to different microwave power penalties. The two wavelengths are then separated, with the microwave powers measured by two photodetectors. A fixed relationship between the microwave power ratio and the microwave Frequency is established. The microwave Frequency is estimated by measuring the two microwave powers. The Frequency Measurement range and resolution can be adjusted by tuning the wavelength spacing. Different Frequency Measurement ranges and resolutions are demonstrated experimentally.

D B Hunter - One of the best experts on this subject based on the ideXlab platform.

Chen Zhi-jie - One of the best experts on this subject based on the ideXlab platform.

  • Modeling and Simulation of Communication Reconnaissance Receivers’s Frequency Measurement
    Computer Simulation, 2006
    Co-Authors: Chen Zhi-jie
    Abstract:

    A Frequency Measurement model to Superheterodyne Receiver in SIMULINK simulation entironment was proposed, especially focusing on the pivotal steps of the modeling and the main performance parameters of the simulation. The’ lowpass equivalence’ principle was applied to the modeling of Superheterodyne Frequency Measurement Receiver, corresponding mathematics simulation procedure was built up, the method of detection threshold determination was discussed in detail in the case of known SNR and unknown SNR, and the simulation example was given based on SIMULINK simulation platform. Each module block was described detailedly, brief Frequency Measurement performance analysis was done according to the typical simulation result. Results show that the method was correct and effective.