The Experts below are selected from a list of 52119 Experts worldwide ranked by ideXlab platform

Mingshan Zhao - One of the best experts on this subject based on the ideXlab platform.

  • low power Rf Signal detection using a high gain tunable oeo based on equivalent phase modulation
    Journal of Lightwave Technology, 2019
    Co-Authors: Yuchen Shao, Yitang Dai, Xiuyou Han, Chao Wang, Boqin Zhu, Mingshan Zhao
    Abstract:

    A novel photonic method for low power radio-frequency (Rf) Signal detection by a tunable optoelectronic oscillator (OEO) with high gain based on equivalent phase modulation (EPM) is proposed and experimentally demonstrated. A dual-parallel Mach-Zehnder modulator is utilized to generate the EPM Signal with a controllable optical carrier to sideband ratio, by which the gain to the Rf Signal by the OEO loop can be enhanced. A phase-shifted fiber Bragg grating (PS-FBG) with a narrow-band notch in its reflection band implements the phase modulation to intensity modulation conversion by removing one sideband of the EPM Signal. The gain and noise peRformance of the detection system are theoretically analyzed and simulated. In the experiment, the maximum gain of 10.4 dB is obtained at 8 GHz, and the detection sensitivity for Rf Signals from 2 to 18 GHz are within the range of −87.7 to −84.3 dBm by using the developed detection system. Compared to normal phase modulation based scheme, the EPM-based system offers 9.1 dB higher gain. Utility of the proposed approach for detecting modulated Rf Signal is also investigated and an optimization scheme is discussed.

  • Low-Power Rf Signal Detection with High Gain Using a Tunable Optoelectronic Oscillator
    2019 IEEE International Conference on Signal Information and Data Processing (ICSIDP), 2019
    Co-Authors: Xiuyou Han, Yitang Dai, Yuchen Shao, Chao Wang, Mingshan Zhao
    Abstract:

    A novel photonic method for low-power Rf Signal detection by a tunable optoelectronic oscillator (OEO) based on a dual-parallel Mach-Zehnder modulator (DP-MZM) and a phase-shifted fiber Bragg grating (PS-FBG) is proposed and experimentally demonstrated. The DP-MZM is utilized to generate the equivalent phase modulation (EPM) Signal with partial optical carrier suppression. The EPM is helpful to enhance the gain to the Rf Signal in the OEO loop. The Rf Signals from 2 to 18 GHz as low as -87 dBm are detected with a gain of about 10 dB. Compared to normal phase modulation based scheme, the EPM-based system offers 9.1 dB higher gain.

  • Rf Signal detection by a tunable optoelectronic oscillator based on a PS-FBG
    Optics letters, 2018
    Co-Authors: Yuchen Shao, Xiuyou Han, Mingshan Zhao
    Abstract:

    Low-power radio frequency (Rf) Signal detection is highly desirable for many applications, ranging from wireless communication to radar systems. A tunable optoelectronic oscillator (OEO) based on a phase-shifted fiber Bragg grating for detecting low-power Rf Signals is proposed and experimentally demonstrated. When the frequency of the input Rf Signal is matched with the potential oscillation mode of the OEO, it is detected and amplified. The frequency of the Rf Signal under detection can be estimated simultaneously by scanning the wavelength of the laser source. The Rf Signals from 1.5 to 5 GHz as low as -91  dBm are detected with a gain of about 10 dB, and the frequency is estimated with an error of ±100  MHz. The peRformance of the OEO system for detecting an Rf Signal with different modulation rates is also investigated.

  • Filtering properties of the tunable microwave photonic filter with stimulated Brillouin scattering
    Optical Engineering, 2014
    Co-Authors: Xiuyou Han, Lina Wang, Yuchen Shao, Chao Tong, Mingshan Zhao
    Abstract:

    The filtering properties of a continuously tunable single-passband microwave photonic filter based on stimulated Brillouin scattering (SBS) are investigated. The filter utilizes the advantage of combining phase-modulated Rf Signal and dual-sideband suppressed-carrier pump Signal to achieve the SBS-based tunable narrowband filtering. The effects of pump power on the out-of-band rejection (OBR) and 3-dB bandwidth, the optical fiber structure on the resonant sideband, and input Rf Signal power on the OBR and 3-dB bandwidth are analyzed theoretically and experimentally. The results show that the pump power has the potential of increasing the OBR and tuning 3-dB bandwidth, whereas the Rf Signal power has nearly no influence on the two parameters.

Yuchen Shao - One of the best experts on this subject based on the ideXlab platform.

  • low power Rf Signal detection using a high gain tunable oeo based on equivalent phase modulation
    Journal of Lightwave Technology, 2019
    Co-Authors: Yuchen Shao, Yitang Dai, Xiuyou Han, Chao Wang, Boqin Zhu, Mingshan Zhao
    Abstract:

    A novel photonic method for low power radio-frequency (Rf) Signal detection by a tunable optoelectronic oscillator (OEO) with high gain based on equivalent phase modulation (EPM) is proposed and experimentally demonstrated. A dual-parallel Mach-Zehnder modulator is utilized to generate the EPM Signal with a controllable optical carrier to sideband ratio, by which the gain to the Rf Signal by the OEO loop can be enhanced. A phase-shifted fiber Bragg grating (PS-FBG) with a narrow-band notch in its reflection band implements the phase modulation to intensity modulation conversion by removing one sideband of the EPM Signal. The gain and noise peRformance of the detection system are theoretically analyzed and simulated. In the experiment, the maximum gain of 10.4 dB is obtained at 8 GHz, and the detection sensitivity for Rf Signals from 2 to 18 GHz are within the range of −87.7 to −84.3 dBm by using the developed detection system. Compared to normal phase modulation based scheme, the EPM-based system offers 9.1 dB higher gain. Utility of the proposed approach for detecting modulated Rf Signal is also investigated and an optimization scheme is discussed.

  • Low-Power Rf Signal Detection with High Gain Using a Tunable Optoelectronic Oscillator
    2019 IEEE International Conference on Signal Information and Data Processing (ICSIDP), 2019
    Co-Authors: Xiuyou Han, Yitang Dai, Yuchen Shao, Chao Wang, Mingshan Zhao
    Abstract:

    A novel photonic method for low-power Rf Signal detection by a tunable optoelectronic oscillator (OEO) based on a dual-parallel Mach-Zehnder modulator (DP-MZM) and a phase-shifted fiber Bragg grating (PS-FBG) is proposed and experimentally demonstrated. The DP-MZM is utilized to generate the equivalent phase modulation (EPM) Signal with partial optical carrier suppression. The EPM is helpful to enhance the gain to the Rf Signal in the OEO loop. The Rf Signals from 2 to 18 GHz as low as -87 dBm are detected with a gain of about 10 dB. Compared to normal phase modulation based scheme, the EPM-based system offers 9.1 dB higher gain.

  • Rf Signal detection by a tunable optoelectronic oscillator based on a PS-FBG
    Optics letters, 2018
    Co-Authors: Yuchen Shao, Xiuyou Han, Mingshan Zhao
    Abstract:

    Low-power radio frequency (Rf) Signal detection is highly desirable for many applications, ranging from wireless communication to radar systems. A tunable optoelectronic oscillator (OEO) based on a phase-shifted fiber Bragg grating for detecting low-power Rf Signals is proposed and experimentally demonstrated. When the frequency of the input Rf Signal is matched with the potential oscillation mode of the OEO, it is detected and amplified. The frequency of the Rf Signal under detection can be estimated simultaneously by scanning the wavelength of the laser source. The Rf Signals from 1.5 to 5 GHz as low as -91  dBm are detected with a gain of about 10 dB, and the frequency is estimated with an error of ±100  MHz. The peRformance of the OEO system for detecting an Rf Signal with different modulation rates is also investigated.

  • Filtering properties of the tunable microwave photonic filter with stimulated Brillouin scattering
    Optical Engineering, 2014
    Co-Authors: Xiuyou Han, Lina Wang, Yuchen Shao, Chao Tong, Mingshan Zhao
    Abstract:

    The filtering properties of a continuously tunable single-passband microwave photonic filter based on stimulated Brillouin scattering (SBS) are investigated. The filter utilizes the advantage of combining phase-modulated Rf Signal and dual-sideband suppressed-carrier pump Signal to achieve the SBS-based tunable narrowband filtering. The effects of pump power on the out-of-band rejection (OBR) and 3-dB bandwidth, the optical fiber structure on the resonant sideband, and input Rf Signal power on the OBR and 3-dB bandwidth are analyzed theoretically and experimentally. The results show that the pump power has the potential of increasing the OBR and tuning 3-dB bandwidth, whereas the Rf Signal power has nearly no influence on the two parameters.

Xiuyou Han - One of the best experts on this subject based on the ideXlab platform.

  • low power Rf Signal detection using a high gain tunable oeo based on equivalent phase modulation
    Journal of Lightwave Technology, 2019
    Co-Authors: Yuchen Shao, Yitang Dai, Xiuyou Han, Chao Wang, Boqin Zhu, Mingshan Zhao
    Abstract:

    A novel photonic method for low power radio-frequency (Rf) Signal detection by a tunable optoelectronic oscillator (OEO) with high gain based on equivalent phase modulation (EPM) is proposed and experimentally demonstrated. A dual-parallel Mach-Zehnder modulator is utilized to generate the EPM Signal with a controllable optical carrier to sideband ratio, by which the gain to the Rf Signal by the OEO loop can be enhanced. A phase-shifted fiber Bragg grating (PS-FBG) with a narrow-band notch in its reflection band implements the phase modulation to intensity modulation conversion by removing one sideband of the EPM Signal. The gain and noise peRformance of the detection system are theoretically analyzed and simulated. In the experiment, the maximum gain of 10.4 dB is obtained at 8 GHz, and the detection sensitivity for Rf Signals from 2 to 18 GHz are within the range of −87.7 to −84.3 dBm by using the developed detection system. Compared to normal phase modulation based scheme, the EPM-based system offers 9.1 dB higher gain. Utility of the proposed approach for detecting modulated Rf Signal is also investigated and an optimization scheme is discussed.

  • Low-Power Rf Signal Detection with High Gain Using a Tunable Optoelectronic Oscillator
    2019 IEEE International Conference on Signal Information and Data Processing (ICSIDP), 2019
    Co-Authors: Xiuyou Han, Yitang Dai, Yuchen Shao, Chao Wang, Mingshan Zhao
    Abstract:

    A novel photonic method for low-power Rf Signal detection by a tunable optoelectronic oscillator (OEO) based on a dual-parallel Mach-Zehnder modulator (DP-MZM) and a phase-shifted fiber Bragg grating (PS-FBG) is proposed and experimentally demonstrated. The DP-MZM is utilized to generate the equivalent phase modulation (EPM) Signal with partial optical carrier suppression. The EPM is helpful to enhance the gain to the Rf Signal in the OEO loop. The Rf Signals from 2 to 18 GHz as low as -87 dBm are detected with a gain of about 10 dB. Compared to normal phase modulation based scheme, the EPM-based system offers 9.1 dB higher gain.

  • Rf Signal detection by a tunable optoelectronic oscillator based on a PS-FBG
    Optics letters, 2018
    Co-Authors: Yuchen Shao, Xiuyou Han, Mingshan Zhao
    Abstract:

    Low-power radio frequency (Rf) Signal detection is highly desirable for many applications, ranging from wireless communication to radar systems. A tunable optoelectronic oscillator (OEO) based on a phase-shifted fiber Bragg grating for detecting low-power Rf Signals is proposed and experimentally demonstrated. When the frequency of the input Rf Signal is matched with the potential oscillation mode of the OEO, it is detected and amplified. The frequency of the Rf Signal under detection can be estimated simultaneously by scanning the wavelength of the laser source. The Rf Signals from 1.5 to 5 GHz as low as -91  dBm are detected with a gain of about 10 dB, and the frequency is estimated with an error of ±100  MHz. The peRformance of the OEO system for detecting an Rf Signal with different modulation rates is also investigated.

  • Filtering properties of the tunable microwave photonic filter with stimulated Brillouin scattering
    Optical Engineering, 2014
    Co-Authors: Xiuyou Han, Lina Wang, Yuchen Shao, Chao Tong, Mingshan Zhao
    Abstract:

    The filtering properties of a continuously tunable single-passband microwave photonic filter based on stimulated Brillouin scattering (SBS) are investigated. The filter utilizes the advantage of combining phase-modulated Rf Signal and dual-sideband suppressed-carrier pump Signal to achieve the SBS-based tunable narrowband filtering. The effects of pump power on the out-of-band rejection (OBR) and 3-dB bandwidth, the optical fiber structure on the resonant sideband, and input Rf Signal power on the OBR and 3-dB bandwidth are analyzed theoretically and experimentally. The results show that the pump power has the potential of increasing the OBR and tuning 3-dB bandwidth, whereas the Rf Signal power has nearly no influence on the two parameters.

Abhijit Banerjee - One of the best experts on this subject based on the ideXlab platform.

  • Frequency pulling in optoelectronic oscillator by Rf Signal injection
    Optical and Quantum Electronics, 2020
    Co-Authors: Jayjeet Sarkar, Larissa Aguiar Dantas Britto, Abhijit Banerjee, Nikhil Ranjan Das, Gefeson Mendes Pacheco
    Abstract:

    This paper brings the results of a study of the frequency pulling in a single loop optoelectronic oscillator (OEO) when injected by weak and strong radio frequency (Rf) Signal. An experiment was peRformed for three different injection Signal powers to study the frequency pulling and the average frequency of the OEO. The analysis is made on the basis of OEO output spectra due to Rf Signal injection, beat frequency, lock-range and average frequency by extracting the values from the experimental data. It is also illustrated that the spectral components present in the injection Signal side are responsible for frequency pulling. The influence of the Rf injection Signal on the phase noise peRformance of the free running OEO and injection locked OEO is also studied. The significant improvement in dipping the spurs of the OEO output spectra by injection locking technique is highlighted. Also the effect of Gaussian minimum shift keying Signal injection on the injection locked OEO output spectrum has been investigated. The experimental evidence of the pulled OEO output characteristics from fast beat state to locked state is also provided.

  • analysis of phase locking in optoelectronic microwave oscillators due to small Rf Signal injection
    IEEE Journal of Quantum Electronics, 2017
    Co-Authors: Abhijit Banerjee, B N Biswas
    Abstract:

    In this paper, we analyze the phase-locking phenomenon in a single-loop optoelectronic microwave oscillator, when subjected to the influence of small radio-frequency (Rf) Signal. We derive the differential equations for the amplitude and phase variations in the oscillator. Using quasi-linear approximation, analytical expressions for the lock range and phase-shift after phase-locking are presented. In addition, beat frequency of the unlocked-driven optoelectronic oscillator (OEO) is obtained and the phase-locking dynamics of the driven oscillator is discussed. Also, the spectrum components of the pulled OEO is derived as a function of the frequency detuning, lock range, beat-frequency, and frequency-shift induced by the phase perturbation of the injection Signal. It is shown that all the analytical closed-form expressions clearly demonstrate the phase-locking mechanism starting from the fast-beat state through the quasi-locked state to the locked state of the pulled OEO. Finally, the simulation results are given to validate the analytical results.

B N Biswas - One of the best experts on this subject based on the ideXlab platform.

  • analysis of phase locking in optoelectronic microwave oscillators due to small Rf Signal injection
    IEEE Journal of Quantum Electronics, 2017
    Co-Authors: Abhijit Banerjee, B N Biswas
    Abstract:

    In this paper, we analyze the phase-locking phenomenon in a single-loop optoelectronic microwave oscillator, when subjected to the influence of small radio-frequency (Rf) Signal. We derive the differential equations for the amplitude and phase variations in the oscillator. Using quasi-linear approximation, analytical expressions for the lock range and phase-shift after phase-locking are presented. In addition, beat frequency of the unlocked-driven optoelectronic oscillator (OEO) is obtained and the phase-locking dynamics of the driven oscillator is discussed. Also, the spectrum components of the pulled OEO is derived as a function of the frequency detuning, lock range, beat-frequency, and frequency-shift induced by the phase perturbation of the injection Signal. It is shown that all the analytical closed-form expressions clearly demonstrate the phase-locking mechanism starting from the fast-beat state through the quasi-locked state to the locked state of the pulled OEO. Finally, the simulation results are given to validate the analytical results.