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MOCT(Magneto Optic Current Transformer)
... passed through the magneto-optical material because of Faraday Effect. Then another polarization prism is used as an analyzer, which is 45 0 oriented with the polarizer, to convert the orientation variation of the polarized light into intensity variation of the light with two outputs, and then these ...
... passed through the magneto-optical material because of Faraday Effect. Then another polarization prism is used as an analyzer, which is 45 0 oriented with the polarizer, to convert the orientation variation of the polarized light into intensity variation of the light with two outputs, and then these ...
All-optical High Speed Logic Gates Using SOA
... by numerical evaluation of the proposed structure. The input optical signal was set as a Gaussian pulse for logic 1 (Fig. 3). The investigated device is a typical bulk InGaAsP-InP region with parameters given in table 2 [9] and pumped with 200 mA. Fig. 4 shows 1Tbps process and includes five traces ...
... by numerical evaluation of the proposed structure. The input optical signal was set as a Gaussian pulse for logic 1 (Fig. 3). The investigated device is a typical bulk InGaAsP-InP region with parameters given in table 2 [9] and pumped with 200 mA. Fig. 4 shows 1Tbps process and includes five traces ...
Fast Optical Communication Components
... An optical fiber is a cylindrical dielectric waveguide that transmits light along its axis, by the process of total internal reflection. The fiber consists of a core surrounded by a cladding layer. To confine the optical signal in the core, the refractive index of the core must be greater than that ...
... An optical fiber is a cylindrical dielectric waveguide that transmits light along its axis, by the process of total internal reflection. The fiber consists of a core surrounded by a cladding layer. To confine the optical signal in the core, the refractive index of the core must be greater than that ...
Chapter 4 Optical Sources
... provide the feedback of photons. This gives the injection laser several major advantages over other semiconductor sources that may be used for optical communications. ...
... provide the feedback of photons. This gives the injection laser several major advantages over other semiconductor sources that may be used for optical communications. ...
Homework Set #7 Due: 4-4-14
... constructed so that the continuum pulses and the 400 nm pulses arrive at the same time. (The delay line to adjust the timing is not shown.) The BBO crystal converts some of the 400 nm light into signal and idler fields. The wavelengths of the signal and idler are determined by rotating the BBO cryst ...
... constructed so that the continuum pulses and the 400 nm pulses arrive at the same time. (The delay line to adjust the timing is not shown.) The BBO crystal converts some of the 400 nm light into signal and idler fields. The wavelengths of the signal and idler are determined by rotating the BBO cryst ...
Presentation
... coupling to an external Si waveguide, a good overlap between the optical mode and electrical gain results Schematic of a heterogeneously integrated III-V microdisk laser with a vertically coupled SOI wave ...
... coupling to an external Si waveguide, a good overlap between the optical mode and electrical gain results Schematic of a heterogeneously integrated III-V microdisk laser with a vertically coupled SOI wave ...
A Ph.D PROPOSAL ON
... falls within the range of 850nm, 1310nm and 1550nm. Laser and LEDs are used to transmit light through optic fibre. Lasers are usually for 1310nm or 1550nm single mode application, while LEDs are used for 850nm or 1300nm multimode applications. Recently, the optic fibre carrying capacity has been gre ...
... falls within the range of 850nm, 1310nm and 1550nm. Laser and LEDs are used to transmit light through optic fibre. Lasers are usually for 1310nm or 1550nm single mode application, while LEDs are used for 850nm or 1300nm multimode applications. Recently, the optic fibre carrying capacity has been gre ...
Optical Sources
... • Photon striking an excited atom causes emission of a second photon which release two more photons creating an avalanche multiplication. • Amplification &Coherence achieved by (Febry – Perot resonator) • Placing mirrors at either end of the amplifying medium • Providing positive feedback • Amplific ...
... • Photon striking an excited atom causes emission of a second photon which release two more photons creating an avalanche multiplication. • Amplification &Coherence achieved by (Febry – Perot resonator) • Placing mirrors at either end of the amplifying medium • Providing positive feedback • Amplific ...
l - band variable gain amplifier with erbium doped fiber
... ways in which EDFs combine by using coding and numerical analysis. First we describe the WDM basic structure, working with the signal using multiplexer or de multiplexers. Introduction of the WDM and EDF functions with the WDM methodology using simple virtual fiber. II. Section defined the methodolo ...
... ways in which EDFs combine by using coding and numerical analysis. First we describe the WDM basic structure, working with the signal using multiplexer or de multiplexers. Introduction of the WDM and EDF functions with the WDM methodology using simple virtual fiber. II. Section defined the methodolo ...
Microsoft Word Format - McMaster University > ECE
... With spontaneous emission considered, numerical solution can be found by twodimensional root searching for N and S under any given static bias I . In this case, S 0 as long as N N tr ( I I tr qVN tr /( c ) ) and strict threshold doesn’t exist. In reality, optical gain is saturated by the o ...
... With spontaneous emission considered, numerical solution can be found by twodimensional root searching for N and S under any given static bias I . In this case, S 0 as long as N N tr ( I I tr qVN tr /( c ) ) and strict threshold doesn’t exist. In reality, optical gain is saturated by the o ...
Wavelength switching
... Distributed FeedBack laser, DFB) and an array of receivers (the size of the array is equal to the number of nodes in the network). The incoming wavelengths are separated using a grating demultiplexer. – aims at simplicity and also supports multicasting. – Each transmitter, in time slots, multiplexes ...
... Distributed FeedBack laser, DFB) and an array of receivers (the size of the array is equal to the number of nodes in the network). The incoming wavelengths are separated using a grating demultiplexer. – aims at simplicity and also supports multicasting. – Each transmitter, in time slots, multiplexes ...
2. Link Margin Calculations
... 1.1. Transmitter Concept and Modelling An optical transmitter is typically modelled as a point source or as a very small surface area radiating light (this calculation is typically independent of the wavelength/spectrum profile of the optical source and the equations apply to any individual waveleng ...
... 1.1. Transmitter Concept and Modelling An optical transmitter is typically modelled as a point source or as a very small surface area radiating light (this calculation is typically independent of the wavelength/spectrum profile of the optical source and the equations apply to any individual waveleng ...
Quantum fluctuations and the Casimir effect
... the amplified signal constant, and not much smaller than unity. In this way the new shot-noise, the one that appears due to the coupling with the signal, will be of the same order of the old shot-noise and the amplified signal and not much larger. ...
... the amplified signal constant, and not much smaller than unity. In this way the new shot-noise, the one that appears due to the coupling with the signal, will be of the same order of the old shot-noise and the amplified signal and not much larger. ...
Optical amplifier
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An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. An optical amplifier may be thought of as a laser without an optical cavity, or one in which feedback from the cavity is suppressed. Optical amplifiers are important in optical communication and laser physics.There are several different physical mechanisms that can be used to amplify a light signal, which correspond to the major types of optical amplifiers. In doped fibre amplifiers and bulk lasers, stimulated emission in the amplifier's gain medium causes amplification of incoming light. In semiconductor optical amplifiers (SOAs), electron-hole recombination occurs. In Raman amplifiers, Raman scattering of incoming light with phonons in the lattice of the gain medium produces photons coherent with the incoming photons. Parametric amplifiers use parametric amplification.