Wavelength Tunable Short Pulses Sources Based on
... Currently, various methods for high-repetition rate optical pulse generation have been studied and developed using mode locked lasers [22][19], fiber ring lasers [6] or gainswitched laser diodes [11]. Such pulse sources might suffer from long term stability and overall reliability issues. Furthermor ...
... Currently, various methods for high-repetition rate optical pulse generation have been studied and developed using mode locked lasers [22][19], fiber ring lasers [6] or gainswitched laser diodes [11]. Such pulse sources might suffer from long term stability and overall reliability issues. Furthermor ...
FTTx PON Guide Testing Passive Optical Networks
... stage for the widespread development of what is now known as the plain old telephone system (POTS). Two years later, a photophone, as it was called, allowed for the transmission of sound over a beam of light. Over the years, various pioneers have made a long series of fascinating discoveries and tec ...
... stage for the widespread development of what is now known as the plain old telephone system (POTS). Two years later, a photophone, as it was called, allowed for the transmission of sound over a beam of light. Over the years, various pioneers have made a long series of fascinating discoveries and tec ...
1)Plot and explain the variation of (a) attractive potential energy (b
... 1) Explain postulates of Maxwell Boltzmann statistics and derive distribution function. 2) Explain postulates of Bose Einstein statistics and derive distribution function. 3) Explain postulates of Fermi Dirac statistics and derive distribution function. {give an comparative study of three types of s ...
... 1) Explain postulates of Maxwell Boltzmann statistics and derive distribution function. 2) Explain postulates of Bose Einstein statistics and derive distribution function. 3) Explain postulates of Fermi Dirac statistics and derive distribution function. {give an comparative study of three types of s ...
Optical and Quantum Communications—J. H. Shapiro, N. C. Wong
... We are embarked on research in the area of quantum information technology whose goal is to enable the quantum-mechanical information transmission, storage, and processing needed for future applications in quantum computing and quantum communication. Our theoretical work in this area has focused on a ...
... We are embarked on research in the area of quantum information technology whose goal is to enable the quantum-mechanical information transmission, storage, and processing needed for future applications in quantum computing and quantum communication. Our theoretical work in this area has focused on a ...
Ultrahigh-resolution optical coherence tomography
... resolution, which is inversely proportional to the bandwidth. Commercial ophthalmic OCT systems use superluminescent diodes (SLD) as low-coherence light source. SLDs typically have 20-30 nm bandwidth and give an axial resolution of 10-15 µm. Broader bandwidth superluminescent diode light sources hav ...
... resolution, which is inversely proportional to the bandwidth. Commercial ophthalmic OCT systems use superluminescent diodes (SLD) as low-coherence light source. SLDs typically have 20-30 nm bandwidth and give an axial resolution of 10-15 µm. Broader bandwidth superluminescent diode light sources hav ...
Test - Wave Optics
... formation—the collection of rays from each point of an object and their redirection by an optical component onto a corresponding point of an image. Ray optics permits us to determine conditions under which light is guided within a given medium,. such as a glass fiber. In isotropic media, optical ray ...
... formation—the collection of rays from each point of an object and their redirection by an optical component onto a corresponding point of an image. Ray optics permits us to determine conditions under which light is guided within a given medium,. such as a glass fiber. In isotropic media, optical ray ...
A simple peak-to-average power ratio reduction
... shifter array and an optical delay line array, proposed by Kyusang Lee [4]. The main idea of this scheme is to divide the overall discrete Fourier transformation (DFT) into multiple phase-shifting and optical delay operations. In this kind of ODFT, the phase-shiftings are implemented by phase shift ...
... shifter array and an optical delay line array, proposed by Kyusang Lee [4]. The main idea of this scheme is to divide the overall discrete Fourier transformation (DFT) into multiple phase-shifting and optical delay operations. In this kind of ODFT, the phase-shiftings are implemented by phase shift ...
Question bank Physics Part1 (Updated 9-July-12)
... 38. A Fresnel’s bi-prism arrangement is set with sodium light ( λ=5893Ǻ) & in the field of view of the eyepiece , sixty two fringes are observed. How many fringes shall we get in the same field of a Hg lamp using green filter passing light of wavelength λ = 5461 Ǻ . 39. Fresnel’s biprism fringes ar ...
... 38. A Fresnel’s bi-prism arrangement is set with sodium light ( λ=5893Ǻ) & in the field of view of the eyepiece , sixty two fringes are observed. How many fringes shall we get in the same field of a Hg lamp using green filter passing light of wavelength λ = 5461 Ǻ . 39. Fresnel’s biprism fringes ar ...
Direct Imaging of Transient Interference in a Optical Microscopy
... NSOM is used to directly measure the evanescent field on the upper surface of the waveguide. The NSOM technique has been frequently used for optical waveguide characterization in light propagation properties, spatial modes profile, and guided modes interference [2]–[5]. NSOM measurements reported he ...
... NSOM is used to directly measure the evanescent field on the upper surface of the waveguide. The NSOM technique has been frequently used for optical waveguide characterization in light propagation properties, spatial modes profile, and guided modes interference [2]–[5]. NSOM measurements reported he ...
High-peak-power pulse generation from a
... The requirement of eye safety for important applications like lidar or free space optical (FSO) communications makes the generation of high-power short optical pulses at 1.5 μm specifically interesting. Moreover, a short rise time of such pulses would reduce the distance error and the measurement ti ...
... The requirement of eye safety for important applications like lidar or free space optical (FSO) communications makes the generation of high-power short optical pulses at 1.5 μm specifically interesting. Moreover, a short rise time of such pulses would reduce the distance error and the measurement ti ...
Efficient yellow-green light generation at 561 nm by frequency
... In particular, such lasers have already found valuable applications in cosmetic dermatology for photodynamic rejuvenation therapy [1] and cancer phototherapy [2,3] for a selective treatment of cancer cells without toxic repercussions on normal cells by driving a controlled photorelease of drugs with ...
... In particular, such lasers have already found valuable applications in cosmetic dermatology for photodynamic rejuvenation therapy [1] and cancer phototherapy [2,3] for a selective treatment of cancer cells without toxic repercussions on normal cells by driving a controlled photorelease of drugs with ...
Generation of radially and azimuthally polarized light by optical
... mechanisms have been identified responsible for the enhancements of optical transmission. The dependence of the enhanced transmission on the grating periodicity is primarily attributed to the Wood anomalies and the excitation of surface plasmons at the metal surfaces [11–16], while the effects of ap ...
... mechanisms have been identified responsible for the enhancements of optical transmission. The dependence of the enhanced transmission on the grating periodicity is primarily attributed to the Wood anomalies and the excitation of surface plasmons at the metal surfaces [11–16], while the effects of ap ...
Noncollinear parametric amplification in the near
... slower while the idler is faster as plotted in figure 4. This interplay mechanism traps the three beams via the nonlinear process thus maximizing the conversion efficiency [46]. The favorable condition is still possible with a noncollinear phase matching geometry with type-II phase matching and it is ...
... slower while the idler is faster as plotted in figure 4. This interplay mechanism traps the three beams via the nonlinear process thus maximizing the conversion efficiency [46]. The favorable condition is still possible with a noncollinear phase matching geometry with type-II phase matching and it is ...
Engineering Optics and Optical Techniques
... The first parentheses term is the square of sinc function shown in Fig. 10.10, which represents the slit width effect, and the second parenthesis also modulates representing multiple slit effects as shown in Fig. 10.17. The modulation by multiple slits, the second parentheses term, becomes zero or m ...
... The first parentheses term is the square of sinc function shown in Fig. 10.10, which represents the slit width effect, and the second parenthesis also modulates representing multiple slit effects as shown in Fig. 10.17. The modulation by multiple slits, the second parentheses term, becomes zero or m ...
Waveguide electro-optic modulation in micro-engineered
... to L , similar to the switching voltage (Vπ ), so that a tradeoff exists between Vπ and BW and the ratio BW/Vπ is used as a figure of merit. To obtain improved efficiency (increase in BW/Vπ ), better coupling between the microwave and optical fields is required. Different solutions have been propose ...
... to L , similar to the switching voltage (Vπ ), so that a tradeoff exists between Vπ and BW and the ratio BW/Vπ is used as a figure of merit. To obtain improved efficiency (increase in BW/Vπ ), better coupling between the microwave and optical fields is required. Different solutions have been propose ...
The concept of modes in optics and photonics
... The concept of modes, or eigenfunctions, is fundamental for all wave phenomena in physics like optics, acoustics and quantum mechanics. In optics and photonics, the concept of modes is well suited to describe emission and absorption, coherence and interference, propagation and dispersion. The concep ...
... The concept of modes, or eigenfunctions, is fundamental for all wave phenomena in physics like optics, acoustics and quantum mechanics. In optics and photonics, the concept of modes is well suited to describe emission and absorption, coherence and interference, propagation and dispersion. The concep ...
Harnessing and control of optical rogue waves in supercontinuum
... focused on understanding the SC noise properties, as the SC amplitude and phase stability are key factors in assessing potential applications. Although initial research here concentrated on establishing guidelines for stable SC generation using femtosecond pulses [8–9], subsequent work has considere ...
... focused on understanding the SC noise properties, as the SC amplitude and phase stability are key factors in assessing potential applications. Although initial research here concentrated on establishing guidelines for stable SC generation using femtosecond pulses [8–9], subsequent work has considere ...
Wavelength Conversion Technologies for Photonic Network
... domain in WDM systems. This enables us to realize highly flexible and reconfigurable communication systems. The application is not limited to WDM systems. If we could use a coherent nonlinear process for wavelength conversion, we can obtain a phase conjugate optical wave. This can be used for the co ...
... domain in WDM systems. This enables us to realize highly flexible and reconfigurable communication systems. The application is not limited to WDM systems. If we could use a coherent nonlinear process for wavelength conversion, we can obtain a phase conjugate optical wave. This can be used for the co ...
- University of East Anglia
... large for quantum tunnelling to occur between different local potential energy minima. In consequence it cannot be assumed that an optically formed assembly will adopt a configuration of lowest absolute energy. The shape of any cluster so formed will usually depart from the initial particle position ...
... large for quantum tunnelling to occur between different local potential energy minima. In consequence it cannot be assumed that an optically formed assembly will adopt a configuration of lowest absolute energy. The shape of any cluster so formed will usually depart from the initial particle position ...
Gauthier Abstracts - Department of Electronics
... An enhanced ray optics model is applied to the study of the optical levitation and trapping properties of a glass cubic object. It is found that for certain highly symmetric orientations simultaneous force and torque equilibrium can exist in the lowest-order TEM00 laser beam profile. For analytical ...
... An enhanced ray optics model is applied to the study of the optical levitation and trapping properties of a glass cubic object. It is found that for certain highly symmetric orientations simultaneous force and torque equilibrium can exist in the lowest-order TEM00 laser beam profile. For analytical ...
Applications of Refractometry in Battery State-of
... special refractometer and to this end we resort to the theory of optical waveguides. ...
... special refractometer and to this end we resort to the theory of optical waveguides. ...
Analysis of the Spectral Resolution of a TeO2 based Noncollinear
... AOTF has been used in a wide range of applications, such as laser wavelength tuning, spectral analysis, spectral imaging [1-3], and etc. TeO2 is a kind of A-O crystal with many applications in the large angular aperture noncollinear AOTF. Light diffraction by acoustic wave propagating in the A-O cry ...
... AOTF has been used in a wide range of applications, such as laser wavelength tuning, spectral analysis, spectral imaging [1-3], and etc. TeO2 is a kind of A-O crystal with many applications in the large angular aperture noncollinear AOTF. Light diffraction by acoustic wave propagating in the A-O cry ...
IOSR Journal of Applied Physics (IOSR-JAP)
... Fig. 3: (a) Variation of α as a function of hv and (b) optical band gap of CuO thin film deposited at various pH. 3.4 The Refractive index of CuO film The refractive index (η) is one of the fundamental properties of an optical material because of its close relationship to the electronic polarization ...
... Fig. 3: (a) Variation of α as a function of hv and (b) optical band gap of CuO thin film deposited at various pH. 3.4 The Refractive index of CuO film The refractive index (η) is one of the fundamental properties of an optical material because of its close relationship to the electronic polarization ...
Ultrashort-Pulse Generation and Ultrafast Phenomena
... originating in the Kerr nonlinearity at high intensities that generates new frequencies and spectrally broadens the pulse. When dispersion is carefully compensated, SPM can aid in generation of pulses with spectra that extend beyond the gain bandwidth. Double chirped mirrors (DCMs) have recently eme ...
... originating in the Kerr nonlinearity at high intensities that generates new frequencies and spectrally broadens the pulse. When dispersion is carefully compensated, SPM can aid in generation of pulses with spectra that extend beyond the gain bandwidth. Double chirped mirrors (DCMs) have recently eme ...
Document - DaTARIUS
... The error signal has to be derived optically, though the HF component is not utilized. The signal from the photo diode is low-pass filtered, so that the high frequency contents are not taken into account. In other words, the individual pits or lands are not taken into account by the servo system. On ...
... The error signal has to be derived optically, though the HF component is not utilized. The signal from the photo diode is low-pass filtered, so that the high frequency contents are not taken into account. In other words, the individual pits or lands are not taken into account by the servo system. On ...
Fiber-optic communication
Fiber-optic communication is a method of transmitting information from one place to another by sending pulses of light through an optical fiber. The light forms an electromagnetic carrier wave that is modulated to carry information. First developed in the 1970s, fiber-optic communication systems have revolutionized the telecommunications industry and have played a major role in the advent of the Information Age. Because of its advantages over electrical transmission, optical fibers have largely replaced copper wire communications in core networks in the developed world. Optical fiber is used by many telecommunications companies to transmit telephone signals, Internet communication, and cable television signals. Researchers at Bell Labs have reached internet speeds of over 100 petabit×kilometer per second using fiber-optic communication.The process of communicating using fiber-optics involves the following basic steps: Creating the optical signal involving the use of a transmitter, relaying the signal along the fiber, ensuring that the signal does not become too distorted or weak, receiving the optical signal, and converting it into an electrical signal.