On-chip optical interconnect for low-power
... LCV is the coupling coefficient between the photonic source and optical waveguide. There are currently several methods to couple the beam emitted from the laser into the optical waveguide. In this analysis we assumed 50% coupling efficiency LCV from the source to a single mode waveguide. LW is the r ...
... LCV is the coupling coefficient between the photonic source and optical waveguide. There are currently several methods to couple the beam emitted from the laser into the optical waveguide. In this analysis we assumed 50% coupling efficiency LCV from the source to a single mode waveguide. LW is the r ...
PowerPoint 簡報
... (1.43eV)(1.6x10-19J/eV) This GaAs photodiode will not operate for photons of l > 869 nm. ...
... (1.43eV)(1.6x10-19J/eV) This GaAs photodiode will not operate for photons of l > 869 nm. ...
Fundamentals of Power and Energy Measurement
... variation of quantum efficiency with wavelength. At wavelengths where silicon does not absorb strongly, photons may penetrate more deeply into the device (or pass through it), leading to minority carrier generation too remote from the junction to be detected (i.e., lower quantum efficiency). The typ ...
... variation of quantum efficiency with wavelength. At wavelengths where silicon does not absorb strongly, photons may penetrate more deeply into the device (or pass through it), leading to minority carrier generation too remote from the junction to be detected (i.e., lower quantum efficiency). The typ ...
Lokal fulltext - Chalmers Publication Library
... technological maturity. They can provide simultaneously low Vπ, sustain high power (both optical and RF) and yet provide low propagation loss. By combining together these features, we present a high-power handling, broadly tunable, electro-optic frequency comb generator. The device produces between ...
... technological maturity. They can provide simultaneously low Vπ, sustain high power (both optical and RF) and yet provide low propagation loss. By combining together these features, we present a high-power handling, broadly tunable, electro-optic frequency comb generator. The device produces between ...
Analysis of Mode-Dependent Gain in Raman Amplified Few-Mode Fiber
... LP01 and 90% into the WGMs constituting LP11 ; this is close to the experimental condition explored in [1], where equalized gain in a depressed cladding FMF was observed by coupling 100% into the WGMs constituting LP11 . For 10 PSMs (LP01 , LP11 , and LP21 ) the optimum launch condition is found to ...
... LP01 and 90% into the WGMs constituting LP11 ; this is close to the experimental condition explored in [1], where equalized gain in a depressed cladding FMF was observed by coupling 100% into the WGMs constituting LP11 . For 10 PSMs (LP01 , LP11 , and LP21 ) the optimum launch condition is found to ...
Modulation Schemes for Single-Laser 100 Gb/s Links
... Previous works have compared some of these modulation methods through extensive simulations [7], [11], [12] or experimentally [13], but no study to date has provided a detailed analysis of these modulation techniques. In this paper and a companion paper [14], we study various modulation formats for ...
... Previous works have compared some of these modulation methods through extensive simulations [7], [11], [12] or experimentally [13], but no study to date has provided a detailed analysis of these modulation techniques. In this paper and a companion paper [14], we study various modulation formats for ...
Coherence and Indistinguishability of Single Electrons Emitted by
... of coherent and indistinguishable single-particle wavepackets emitted by several synchronized but otherwise independent emitters. The collision of two particles emitted at two different inputs of a beamsplitter can be used to measure their degree of indistinguishability. In the case of bosons, indis ...
... of coherent and indistinguishable single-particle wavepackets emitted by several synchronized but otherwise independent emitters. The collision of two particles emitted at two different inputs of a beamsplitter can be used to measure their degree of indistinguishability. In the case of bosons, indis ...
Intensity Noise Performance of Semiconductor Lasers
... 3 Results and Discussion In the following we will analyze the intensity noise properties in terms of RIN, rst, of the QCL, and second, of the standard telecommunication device with respect to the dierent current sources biasing the laser devices. Then, we will directly compare the current noise o ...
... 3 Results and Discussion In the following we will analyze the intensity noise properties in terms of RIN, rst, of the QCL, and second, of the standard telecommunication device with respect to the dierent current sources biasing the laser devices. Then, we will directly compare the current noise o ...
Optical Amplifier Basic Properties and System Modeling
... Noise is inherent in the output of the photodetector. The origin of this noise can be treated in two ways. In the quantum treatment, the optical field is quantized into photons and each photon gives rise to an electron with probability 1J. Due to the random occurrence in time of the photons, a noise ...
... Noise is inherent in the output of the photodetector. The origin of this noise can be treated in two ways. In the quantum treatment, the optical field is quantized into photons and each photon gives rise to an electron with probability 1J. Due to the random occurrence in time of the photons, a noise ...
Techniques And Performance Of Intensity
... a fiber is relatively inefficient, making the single-mode fibercoupled slope efficiencies of commercially available devices typically 10%–50% of the diode-chip slope efficiency. The fiber-coupled slope efficiencies of presently available diode lasers range from 0.1 to 0.32 W/A [26]. Using the highes ...
... a fiber is relatively inefficient, making the single-mode fibercoupled slope efficiencies of commercially available devices typically 10%–50% of the diode-chip slope efficiency. The fiber-coupled slope efficiencies of presently available diode lasers range from 0.1 to 0.32 W/A [26]. Using the highes ...
Light-Emitting Diode Degradation and Low
... factor between optical and electrical fluctuations in one-octave frequency band roct dependence on central frequency fc of octave filter (in insets). ...
... factor between optical and electrical fluctuations in one-octave frequency band roct dependence on central frequency fc of octave filter (in insets). ...
Online supplementary material - Springer Static Content Server
... Supplementary Figure S3. Intermediate frequency power vs resolution bandwidth. (a) Power spectral density at the IF. The peak power does not change significantly for a RBW from 1 MHz to 1 kHz. This means that the optical bandwidth is narrower and, within this RBW range, the signal is not cut out. (b ...
... Supplementary Figure S3. Intermediate frequency power vs resolution bandwidth. (a) Power spectral density at the IF. The peak power does not change significantly for a RBW from 1 MHz to 1 kHz. This means that the optical bandwidth is narrower and, within this RBW range, the signal is not cut out. (b ...
... resulting degradation does not overcompensate for the benefit due to reduced carrier power, receiver sensitivity increases. Fig. 3b) shows simulation results for different values of the bias. Sensitivity is increased, but obviously there is not a clear optimum value for the bias. It seems that best ...
Photometer and Optical Link
... The lumen (lm) is a measure of the total light power emitted by a source. You might then expect that there is a conversion factor between lumens and Watts, and you would be right: its value is 683 lm/Watt. However, things are a bit more complicated because this conversion factor is only correct for ...
... The lumen (lm) is a measure of the total light power emitted by a source. You might then expect that there is a conversion factor between lumens and Watts, and you would be right: its value is 683 lm/Watt. However, things are a bit more complicated because this conversion factor is only correct for ...
Optical Encoders SERIES 61C
... Rating: 5 Vdc, 10 mA, resistive Contact Resistance: less than 10 ohms (TTL or CMOS Compatible) Voltage Breakdown: 250 Vac between mutually insulated parts. Contact Bounce: Less than 4 milliseconds at make and less than 10 milliseconds at break. Actuation Life: 3,000,000 operations. Actuation Force: ...
... Rating: 5 Vdc, 10 mA, resistive Contact Resistance: less than 10 ohms (TTL or CMOS Compatible) Voltage Breakdown: 250 Vac between mutually insulated parts. Contact Bounce: Less than 4 milliseconds at make and less than 10 milliseconds at break. Actuation Life: 3,000,000 operations. Actuation Force: ...
Department of Physical Sciences (Physics
... is a light that is based on a gas discharge (similar to shop signs). Initially, at low voltage, the neon acts as an insulator (infinite resistance). Once the voltage across the bulb reaches 90V the gas is said to break-down and become a conductor (resistance essentially zero). (a) After the switch i ...
... is a light that is based on a gas discharge (similar to shop signs). Initially, at low voltage, the neon acts as an insulator (infinite resistance). Once the voltage across the bulb reaches 90V the gas is said to break-down and become a conductor (resistance essentially zero). (a) After the switch i ...
Miteq DR-125G-A, 12-GHZ Fiber
... voltage. If this optimum optical input power is exceeded, the detector will go into compression (output signal will decrease for increasing optical input power). This will also produce high second harmonic distortions (10–20 dB down from the beat frequency) and reduce the SNR, consequently decreasin ...
... voltage. If this optimum optical input power is exceeded, the detector will go into compression (output signal will decrease for increasing optical input power). This will also produce high second harmonic distortions (10–20 dB down from the beat frequency) and reduce the SNR, consequently decreasin ...
PDF
... Communications Jinks on high performance computers currenlly use electrical or directly modulated laser optical communication links that are connected to microprocessors indirectly through electrical transmission lines. In either case, powering an electrical communication line is necessary. Further, ...
... Communications Jinks on high performance computers currenlly use electrical or directly modulated laser optical communication links that are connected to microprocessors indirectly through electrical transmission lines. In either case, powering an electrical communication line is necessary. Further, ...
Optical Network Control Overview
... along the path. For example when running through a 3R regenerator a different output modulation format could be used. Bit rate. This typically would not change since we are not changing the digital bit stream in any end-to-end meaningful way. FEC: Indicates whether forward error correction is used i ...
... along the path. For example when running through a 3R regenerator a different output modulation format could be used. Bit rate. This typically would not change since we are not changing the digital bit stream in any end-to-end meaningful way. FEC: Indicates whether forward error correction is used i ...
IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-ISSN: 2278-1684,p-ISSN: 2320-334X,
... The main idea of TGC is that high numerical aperture optical fibers are directly arranged in the concrete and the optical fiber is used as sensing element and optical transmission element. Since light can transmit in the optical fiber, different shape of TGC can be fabricated by distributing certain ...
... The main idea of TGC is that high numerical aperture optical fibers are directly arranged in the concrete and the optical fiber is used as sensing element and optical transmission element. Since light can transmit in the optical fiber, different shape of TGC can be fabricated by distributing certain ...
Class-B Microwave-Photonic Link Using Optical Frequency
... In an ideal class-B optical link [11], all received optical power contributes to signal power. If suitable transfer functions for the source modulator can be realized, shot noise can be reduced by 11 dB and intensity noise by 20 dB, relative to a conventional link and for a modulation index of 10%. ...
... In an ideal class-B optical link [11], all received optical power contributes to signal power. If suitable transfer functions for the source modulator can be realized, shot noise can be reduced by 11 dB and intensity noise by 20 dB, relative to a conventional link and for a modulation index of 10%. ...
Signal Distortion on optical fibers
... be used to recover the data. The demodulation therefore has to be done only in time domain. This is possible only by AM scheme where the signal can be recovered by a primitive technique of envelop detection. The optical communication system hence cannot be treated on line similar to that used for no ...
... be used to recover the data. The demodulation therefore has to be done only in time domain. This is possible only by AM scheme where the signal can be recovered by a primitive technique of envelop detection. The optical communication system hence cannot be treated on line similar to that used for no ...
Microwave harmonic generation in fiber
... It is seen from Eq. (13) that second harmonic of the modulation signal ωRF is generated, however small OMD and ideal photodetector have been supposed. The modulation signal cannot be recovered if the phase difference ϕ2 ϕ1 is equal to (2n + 1)π . Generally the optical field E (t ) is composed of sev ...
... It is seen from Eq. (13) that second harmonic of the modulation signal ωRF is generated, however small OMD and ideal photodetector have been supposed. The modulation signal cannot be recovered if the phase difference ϕ2 ϕ1 is equal to (2n + 1)π . Generally the optical field E (t ) is composed of sev ...
icm_cairo
... the input optical sensitivity for a BER of 10-9 is as low as –20.4 dBm. The corresponding dynamic range is calculated to be 25.5 dB for 500 mV peak output voltage swing. If a wider dynamic range is desired, an automatic gain-control circuit must be added. The above results were obtained assuming a ...
... the input optical sensitivity for a BER of 10-9 is as low as –20.4 dBm. The corresponding dynamic range is calculated to be 25.5 dB for 500 mV peak output voltage swing. If a wider dynamic range is desired, an automatic gain-control circuit must be added. The above results were obtained assuming a ...
Superluminescent diode
A superluminescent diode (SLED or SLD) is an edge-emitting semiconductor light source based on superluminescence. It combines the high power and brightness of laser diodes with the low coherence of conventional light-emitting diodes. Its emission band is 5–100 nm wide.