Showing papers on "Mach–Zehnder interferometer published in 2006"
TL;DR: In this article, a single-band-pass tunable microwave filter was proposed based on a broadband optical source and a fiber Mach-Zehnder interferometer and showed a high Q factor over a tuning range of 5-17 GHz.
Abstract: The authors present the theoretical analysis and experimental demonstration of a novel single-bandpass tunable microwave filter. The filter is based on a broadband optical source and a fiber Mach-Zehnder interferometer and shows a high Q factor over a tuning range of 5-17 GHz. A generalized analysis considering that the optical signal propagates along optical delay lines with a dispersion slope different from zero is presented.
256 citations
TL;DR: In this paper, the authors present highly sensitive optical biosensors based on integrated Mach-Zehnder interferometers, which have been designed to have high surface sensitivity and monomode behaviour.
Abstract: We present highly sensitive optical biosensors able to be fully integrated in lab-on-a-chip microsystems using standard CMOS compatible processes. These optical biosensors are based on integrated Mach–Zehnder interferometers, which have been designed to have high surface sensitivity and monomode behaviour. As a biosensing application of the devices we show the real-time detection of the covalent immobilization and hybridization of DNA strands without labelling. In order to achieve a lab-on-a-chip portable microsystem, we present the integration of the sensor with a CMOS compatible microfluidic system using SU-8 photolithography patterned layers.
188 citations
TL;DR: Optical directional couplers and Mach-Zehnder interferometers employing surface plasmon polaritons are proposed and their characteristics are analyzed numerically using a finite-difference time-domaine.
140 citations
TL;DR: A scheme to achieve Mach-Zehnder interferometry using a quantized Bose-Josephson junction with a negative charging energy that ensures the existence of a path-entangled state which enhances the phase measurement precision to the Heisenberg limit.
Abstract: We propose a scheme to achieve Mach-Zehnder interferometry using a quantized Bose-Josephson junction with a negative charging energy. The quantum adiabatic evolution through a dynamical bifurcation is used to accomplish the beam splitting and recombination. The negative charging energy ensures the existence of a path-entangled state which enhances the phase measurement precision to the Heisenberg limit. A feasible detection procedure is also presented. The scheme should be realizable with current technology.
103 citations
TL;DR: A novel fiber-optic in-fiber integrated Michelson interferometer has been proposed and demonstrated that consists of a segment of two-core fiber with a mirrored fiber end and the sensing characteristics based on the two- core fiber bending are investigated.
Abstract: A novel fiber-optic in-fiber integrated Michelson interferometer has been proposed and demonstrated. It consists of a segment of two-core fiber with a mirrored fiber end. The sensing characteristics based on the two-core fiber bending, corresponding to the shift of the phase of the two-core in-fiber integrated Michelson interferometer, are investigated.
86 citations
TL;DR: In this article, a compact optical waveguide modulator based on a Mach-Zehnder interferometer driven by surface acoustic waves was demonstrated, achieving peak-to-peak modulation exceeding 90% of the average transmission and operation in the gigahertz frequency range.
Abstract: The authors demonstrate a compact optical waveguide modulator based on a Mach-Zehnder interferometer driven by surface acoustic waves. The modulator was monolithically fabricated on GaAs with an active region length of approximately 15μm. It yields peak-to-peak modulation exceeding 90% of the average transmission and operation in the gigahertz frequency range.
82 citations
TL;DR: In this article, the authors used the Mach-Zehnder interferometer to probe the statistics of quasiparticles in the fractional quantum Hall regime, and showed that the tunneling current through the inter-ferometer can be computed as the function of the Aharonov-Bohm flux, temperature, and voltage bias.
Abstract: We study transport through an electronic Mach-Zehnder interferometer recently devised at the Weizmann Institute. We show that this device can be used to probe the statistics of quasiparticles in the fractional quantum Hall regime. We calculate the tunneling current through the interferometer as the function of the Aharonov-Bohm flux, temperature, and voltage bias, and demonstrate that its flux-dependent component is strongly sensitive to the statistics of tunneling quasiparticles. More specifically, the flux-dependent and flux-independent contributions to the current are related by a power law, the exponent being a function of the quasiparticle statistics.
76 citations
TL;DR: Fractionally charged quasiparticles in the quantum Hall state with a filling factor nu=5/2 are expected to obey non-Abelian statistics and it is demonstrated that their statistics can be probed by transport measurements in an electronic Mach-Zehnder interferometer.
Abstract: Fractionally charged quasiparticles in the quantum Hall state with a filling factor nu=5/2 are expected to obey non-Abelian statistics. We demonstrate that their statistics can be probed by transport measurements in an electronic Mach-Zehnder interferometer. The tunneling current through the interferometer exhibits a characteristic dependence on the magnetic flux and a nonanalytic dependence on the tunneling amplitudes which can be controlled by gate voltages.
71 citations
TL;DR: A shaper scheme that fully controls the spectral phase, amplitude, and polarization of femtosecond laser pulses is presented and enables independent manipulation over the major axis orientation and the axis ratio of the polarization ellipse.
Abstract: We present a shaper scheme that fully controls the spectral phase, amplitude,
and polarization of femtosecond laser pulses. In particular, it enables independent manipulation over the major axis orientation and the axis ratio of the polarization ellipse. This is accomplished by integrating a 4f-shaper setup in both arms of a Mach-Zehnder interferometer and rotating the polarization by 90° in one of the arms before overlaying the beams. The generated pulses are resolved in a simple and intuitive detection scheme.
69 citations
TL;DR: In this article, an all-optical logic AND gate is demonstrated using a semiconductor optical amplifier (SOA) based Mach-Zehnder interferometer (MZI).
62 citations
TL;DR: In this paper, an all-optical xor operation was demonstrated using a semiconductor optical amplifier Mach-Zehnder interferometer (SOA-MZI) and delayed interferometers (DI) at 80 Gb/s.
Abstract: All-optical xor operation has been demonstrated using a semiconductor optical amplifier Mach-Zehnder interferometer (SOA-MZI) and delayed interferometer (DI) at 80 Gb/s. The DI is based on a polarization maintaining loop (PML) mirror. The results show using the PML-DI in series with the SOA-MZI improves the pulse quality of the xor result
TL;DR: In this paper, a novel wavelength-selective all-fiber filter using a single long-period fiber grating interacting with a misaligned fusion splicing point has been demonstrated.
21 May 2006
TL;DR: In this article, a two-dimensional photonic-crystal based Symmetric Mach Zehnder type all-optical switch (PC-SMZ) with InAs quantum dots acting as a nonlinear phase shift source was demonstrated.
Abstract: We demonstrated a novel two-dimensional photonic-crystal based Symmetric Mach Zehnder type all-optical switch (PC-SMZ) with InAs quantum dots acting as a nonlinear phase-shift source. The 600-mum-long PC-SMZ exhibited a 15-ps-wide switching-window at sufficiently low optical-energy of ~100 fJ.
TL;DR: An integrated electro-optic waveguide modulator is demonstrated in bulk fused silica using a Mach-Zehnder interferometer waveguide structure fabricated by direct writing with a femtosecond laser followed by thermal poling.
Abstract: An integrated electro-optic waveguide modulator is demonstrated in bulk fused silica. A Mach-Zehnder interferometer waveguide structure is fabricated by direct writing with a femtosecond laser followed by thermal poling. A 20° electro-optic phase shift is achieved at an operating wavelength of 1.55 μm with an applied voltage of 400 V and an interaction length of 25.6 mm, which correspond to an estimated effective electro-optic coefficient of 0.17 pm/V for the TE-polarized mode.
TL;DR: Generation of optical 40Gb/s frequency-shift-keying signals, which can be demodulated by an optical filter, is demonstrated by using a fabricated versatile optical modulator having traveling-wave electrodes designed for high-speed signals.
Abstract: We investigated an integrated optical modulator consisting of two Mach-Zehnder interferometers. The modulator can generate optical signals in various types of modulation formats, which have advantages for long-haul transmission, optical labeling, etc. By using a fabricated versatile optical modulator having traveling-wave electrodes designed for high-speed signals, we demonstrated generation of optical 40Gb/s frequency-shift-keying signals, which can be demodulated by an optical filter. 80Gb/s optical differential quadrature-shift-keying modulation was also demonstrated, where 40Gb/s in-phase and quadrature data were, simultaneously, fed to the modulator.
TL;DR: In this article, the authors introduced a plane mirror interferometer that exclusively uses plane mirrors as reflectors; thus, these interferometers correspond well to the original Michelson Interferometer.
Abstract: The conception and properties will be introduced of an interferometer that exclusively uses plane mirrors as reflectors; thus, these interferometers correspond well to the original Michelson interferometer First, the relationship between the interference conditions and the detection with photodiodes will be discussed using the example of known interferometers as well as reasons given for primarily using corner cube reflectors in these devices Next, the conceptual design of the plane mirror interferometer will be presented This type of interferometer possesses new properties which are significant for metrological and technical applications Only one measuring beam exists between the polarizing beam splitter and the measuring mirror and this beam alone represents the Abbe axis This property allows the significant reduction of the Abbe error The interferometer is able to tolerate tilting on the order of about 1' This ensures the orthogonality between the measuring beam and the measuring mirror during the measurement This property can be used in three-dimensional measurements to erect the three measuring beams as a x–y–z Cartesian coordinate system on the basis of three orthogonal mirrors The plane-mirror interferometer also allows non-contact measurements of planar and curved surfaces, eg silicon wafers
TL;DR: In this paper, a novel design of a silicon-on-insulator (SOI) filter for passive optical network applications is described, which comprises a monolithically integrated planar reflective grating and a multistage Mach-Zehnder interferometer.
Abstract: A novel design of a silicon-on-insulator (SOI) filter for passive optical network applications is described. The SOI filter comprises a monolithically integrated planar reflective grating and a multistage Mach-Zehnder interferometer. The fabricated device showed low insertion losses and high optical isolation. To the best of our knowledge, this letter describes the first demonstration of an SOI circuit comprising monolithically integrated planar reflective grating and cascaded Mach-Zehnder interferometer
05 Jun 2006
TL;DR: In this article, the InP Mach-Zehnder-Modulator with a low rms jitter of 730 fs is presented as a step towards 80 Gbit/s transmission.
Abstract: We demonstrate excellent 40 Gbit/s operation of a packaged InP Mach-Zehnder-Modulator with a low rms jitter of 730 fs. A modulator with 63 GHz on-chip bandwidth is shown as a step towards 80 Gbit/s transmission.
TL;DR: This article tried to realize the Mach-Zehnder interferometer sensor based on silicon oxides, and the refractive index of the oxides was controlled by the oxygen concentration to achieve the single-mode behavior of a total internal reflection (TIR) waveguide.
TL;DR: In this paper, a nonlinear Mach-Zehnder interferometer based on photonic-crystal waveguides is proposed and modeled by using rigorous finite-element-based numerical scheme.
Abstract: A nonlinear Mach-Zehnder interferometer based on photonic-crystal waveguides is proposed and modeled by using rigorous finite-element-based numerical scheme. Guided modes of nonlinear photonic-crystal waveguides are investigated to determine a length of nonlinear arm and a switching power, and further, intensity-dependent switching characteristics of the nonlinear Mach-Zehnder interferometer, for the first time, as far as the authors know, are demonstrated. Effects of saturable nonlinearity and two-photon absorption (TPA) on switching characteristics are also taken into account.
TL;DR: An all-optical NAND gate using integrated SOA-based Mach–Zehnder interferometer and 10 Gb/s RZ pseudorandom bit sequences is proposed and demonstrated for the first time, demonstrating its effectiveness.
TL;DR: In this article, the authors presented a successful design, realization, and characterization of single-mode rib optical waveguides on SOG/SU-8 polymers in order to highlight a new approach to designing heat sensors.
Abstract: This paper presents a successful design, realization,and characterization of single-mode rib optical waveguides on SOG/SU-8 polymers in order to highlight a new approach to designing heat sensors. The basic principle of this new thermal-sensing method relies on the differential thermal behavior regarding both acting arms of a micro Mach-Zehnder Interferometer(MZI). First, two families of single-mode straight rib waveguides composed of SOG/SU-8 polymers are analyzed. Hence, optical losses for TE00 and TM00 optical modes for structures on Si/SiO2/SU-8 have been estimated respectively as 1,36 plusmn 0,02 and 2,01plusmn0,02 dBmiddotcm-1, while the second one composed of Si/SiO2 /SOG/SU-8 presented losses of 2,33 plusmn 0,02 and 2,95plusmn0,02 dBmiddotcm-1. Then, owing to modeling results, an experimental sensor is realized as an integrated device made up of SU-8 polymer mounted on a standard silicon wafer. When subjected to a radiant source, as a laser light (980 nm) is injected across the cleaved input face of the MZI, the significant change of output signal allows us to consider a new approach to measuring radiant heat flowrate. Experimental results are given regarding the obtained phase shift against the subjected thermal power. According to the modeling results, one can expect new highly sensitive devices to be developed in the next coming years, with advantageous prospective industrial applications
TL;DR: In this paper, a novel all-optical switch based on nonlinear polarization mechanism using polarization-maintaining fiber ring with a polarization rotator is proposed, and the tradeoff between switching power and bandwidth is discussed.
TL;DR: In this paper, the authors reported the observation of fringes from a three-grating electron interferometer at low energies ranging from 6 to 10?keV, where the fringes exceeded the maximal contrast of the classical equivalent Moir? deflectometer.
Abstract: We report the observation of fringes from a three-grating electron interferometer. Interference fringes have been observed at low energies ranging from 6 to 10?keV. Contrasts of up to 25% are recorded and exceed the maximal contrast of the classical equivalent Moir? deflectometer. This type of interferometer could serve as a separate beam Mach?Zehnder interferometer for low-energy electron interferometry experiments.
TL;DR: A computer-control test system that uses a Mach-Zehnder interferometer capable of monitoring and correcting drift in the tiled-grating assemblies within the compressor is described, which compensated differential errors due to eight gratings, within a compressor with four grating assemblies.
Abstract: Multikilojoule petawatt lasers using chirped-pulse amplification are being constructed worldwide. Several systems have adopted a tiled-grating approach to meet the size requirements for the compression gratings. Grating tiles need to be precisely phased to ensure a transform-limited focal spot when focusing high-energy laser pulses in the target plane. A computer-control test system that uses a Mach-Zehnder interferometer capable of monitoring and correcting drift in the tiled-grating assemblies within the compressor is described. The differential errors due to eight gratings, within a compressor with four grating assemblies, were compensated by adjusting a single grating.
TL;DR: In this paper, a surface plasmon polariton (SPP) interferometer relying on elliptical Bragg mirrors was analyzed using a leakage radiation microscope, where oscillation fringes with unit visibility at the two interferometers exits were observed.
Abstract: We present a quantitative experimental analysis of a surface plasmon polariton (SPP) interferometer relying on elliptical Bragg mirrors. By using a leakage radiation microscope, we observe oscillation fringes with unit visibility at the two interferometer exits. We study the properties of the SPP beam splitter and determine experimentally both the norm and phase of the SPP reflection and transmission coefficients.
TL;DR: In this article, an electromagnetic field sensor linking a LiNbO3 electrooptical modulator with a circular antenna was studied and the frequency response was flat from 50 MHz to 3 GHz.
Abstract: An electromagnetic field sensor linking a LiNbO3 electrooptical modulator with a circular antenna was studied In this sensor, a Mach-Zehnder electrooptical modulator was used as one of the fundamental building blocks The frequency response was flat from 50 MHz to 3 GHz The minimum detectable electromagnetic field intensity is 07 mV/m at 50 MHz and 12 mV/m at 3 GHz, respectively © 2006 Wiley Periodicals,IncMicrowave Opt Technol Lett 48:1897–1899, 2006; Published online in Wiley InterScience (wwwintersciencewileycom) DOI 101002/mop21776
TL;DR: In this paper, a Bose-Einstein condensate beam splitter with a double well potential of tunable height is analyzed. Butler et al. showed that the phase sensitivity of the beam-splitter is degraded by the nonlinear particle-particle interaction during the splitting dynamics.
Abstract: A beam splitter is an important component of an atomic/optical Mach-Zehnder interferometer. Here we study a Bose-Einstein condensate beam splitter, realized with a double well potential of tunable height. We analyze how the sensitivity of a Mach-Zehnder interferometer is degraded by the nonlinear particle-particle interaction during the splitting dynamics. We distinguish three regimes, Rabi, Josephson and Fock, and associate to them a different scaling of the phase sensitivity with the total number of particles.
TL;DR: It is shown that with changing the optical amplifier gain the switching threshold can be tuned and can be used as a functional block for the integrated optical switch with very small and tunable threshold.