A voltage sensor with high resolution and large measurement range based on an optoelectronic oscillator (OEO) is proposed experimentally demonstrated. The key component in the cavity to select oscillating signal a finite impulse response (FIR)-microwave photonic filter (MPF) which consists of sinusoidal broadband optical signal, unbalanced Mach–Zehnder interferometer (MZI), section dispersion compensating fiber, photodetector. center frequency FIR-MPF mainly determined by free spectral (FSR)...

A photonic-assisted microwave mixer using a Sagnac-loop-based modulator and polarization-dependent modulation is proposed experimentally demonstrated. In this scheme, dual-parallel Mach–Zehnder (DPMZM) incorporated in Sagnac loop, where light single-sideband (SSB) modulated along one direction with no the opposite due to traveling-wave velocity mismatch DPMZM. The SSB-modulated unmodulated optical carrier (OC) propagation directions orthogonal polarizations are combined via polarization beam...

We proposed and successfully validated improved the sensitivity of magnetic field sensing using Vernier effect in a dual-loop optoelectronic oscillator (OEO) incorporating cascaded L-shaped Terfenol-D-FBGs. Thanks to time delay introduced by dispersion compensating fiber (DCF) OEO cavity, precise conversion between FBG wavelength changes oscillation frequency can be achieved. The central wavelengths Terfenol-D-FBG change along with field. Therefore, monitored measuring oscillating OEO. In...

A novel technique to simultaneously compensate dispersion-induced power fading for multi-service radio-over-fiber (RoF) links is proposed. At the central office (CO), a phase-coherent orthogonal lightwave generator (POLG) consisting of polarization rotator (PR) and single-driver Mach-Zehnder modulator (MZM) used. By adjusting controller (PC) in base station (BS), phase difference between carrier two sidebands can be controlled, frequency response flexibly shifted individual radio (RF)...

We propose and experimentally demonstrate a full-duplex radio-over-fiber (RoF) system with colorless upstream transmission based on orthogonal phase-correlated modulation (OPM). This new OPM scheme, which realized by polarization rotator (PR) single-driver Mach-Zahnder modulator (MZM) at the central office (CO), achieves polarization-orthogonality between optical carrier (OC) subcarriers generated radio frequency (RF) signals. By adjusting controller (PC) in remote access units (RAU),...

To reduce the complexity and cost of remote access units (RAUs), colorless transport architecture is preferred in a wavelength-division multiplexing (WDM) system. The wavelength-reuse technique commonly adopted to realize RAUs. However, traditional approaches, RAUs employ crystal-based Mach-Zehnder modulators (MZMs) modulate distributed carriers. Hence, polarization tracking systems are necessary align state carriers with MZM principal axis. This increases In this paper, full-duplex...

We propose and experimentally demonstrate a tunable frequency-doubling optoelectronic oscillator (FD-OEO) based on single-bandpass dispersion-induced microwave photonic filter (MPF) consisting of Mach–Zehnder modulator (MZM), linearly chirped fiber Bragg grating polarization-multiplexed dual-loop. Thanks to the polarization dependence MZM, special double sideband modulation is implemented where optical carrier (OC) subcarriers are orthogonally polarized. By simply tuning PC in OEO loop,...

A multiband radio-over-fiber system for a fifth-generation (5G) mobile communication technology fronthaul network is proposed, which can transmit radio frequency (RF) signals in four different bands of 700 MHz, 1.8 GHz, 3.5 and 26 GHz with data rates simultaneously. The proposed satisfy the multiscenario demand 5G realize 4G/5G coexistence. dual-polarization binary phase-shift keying modulator utilized to alleviate interference between multiple-frequency bands. analyzed theoretically...

An approach for chromatic dispersion measurement is proposed and experimentally demonstrated based on an optoelectronic oscillator (OEO) incorporating a single bandpass microwave photonic filter (MPF), which implemented by cascading finite impulse response (FIR) MPF infinite (IIR) jointly. The key concept of the design mapping device under test (DUT) to oscillating frequency OEO embedding DUT into loop. mainly determined central MPF, depends length difference two arms Mach-Zehnder...

The metal element of Ca, Zn, Mo and Al was added to the engine oil in order improve performance oil.Trace may be introduced due raw material or production processes, therefore, analysis trace can giving some fingerprint spectra information.The metals are commonly by inductively coupled plasma atomic emission spectrometry (ICP-OES) 1-7 absorption (AAS) 8,9 , but ICP-AES AAS only determine micro oil, they hardly oil.Not ICP-MS able detect also it could faster than AAS.Therefore, we used analyze oil.

We propose and analyze an instantaneous frequency measurement system by using optical power monitoring technique with improved resolution. The primary component adopted in the proposal is a dual-polarization quadrature phase shift keying (DP-QPSK) modulator which used to modulate microwave signal that has designed time delay shifting. generated sent polarization beam splitter (PBS) DP-QPSK modulator. Owing complementary transmission nature of interference introduced PBS, information...

In this paper, we propose and demonstrate a novel, to the best of knowledge, filter-free photonics-assisted microwave frequency translator with tunable phase shift amplitude. The pivotal component proposed scheme is an integrated dual-polarization quadrature keying (DP-QPSK) modulator, which applied generate polarization orthogonal carrier-suppressed single sideband modulation signal shifted optical carrier signal. polarization-multiplexed outputs from DP-QPSK modulator then sent...

This Letter presents a novel, to the best of our knowledge, linearized analog photonic link (APL) based on phase-coherent orthogonal light wave generator that consists polarization-dependent Mach–Zehnder modulator (MZM) and polarization controller (PC). By adjusting PC bias voltage MZM, third-order intermodulation (IMD3) terms can be suppressed while retaining high gain for fundamental terms, which indicates spurious free dynamic range (SFDR) proposed APL much improved. To further verify...

We demonstrate an instantaneous frequency measurement (IFM) scheme using optical power monitoring based on a dual-parallel dual-polarization Mach-Zehnder modulator (DP-DPMZM). The amplitude comparison function is related to the input microwave and electrical time delay, which achieved by of orthogonal polarization signals. principle theoretical analyzed, simulation IFM system performed verify mechanism.

A novel photonic-assisted multifunctional radar is proposed for simultaneous measurement of the distance, velocity, and direction target. In this scheme, a dual-polarization binary phase shift keying (DP-BPSK) modulator used to implement parallel de-chirping process echo signals received by two distributed receiving antennas. By applying composite signal that combines linear frequency modulated (LFM) single-frequency microwave as transmitted signal, target under test can be derived analyzing...