Equivalent electric circuit of the P‐i‐N photodiode for the pulse incident excitation

Lazović, Miomira V.; Matavulj, Petar; Radunovic, J.B.

doi:10.1002/mop.20174

Cited by 3 publications

(4 citation statements)

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“…Also, the model is completely applicable for the linear regimes with the constant carriers' velocities. The nonlinearity effect observed here happens only due to the influence of photodiode voltage on carriers' velocities [9][10][11][12]. The effect becomes relevant when the photodiode is not highly saturated, so the carriers' velocities are not simple saturation velocities, and when the energy of light pulses varies (so the average carriers' velocities alter from pulse to pulse).…”

Section: Introductionmentioning

confidence: 87%

“…Several assumptions are made: 1) the width of the P region is much smaller than the width of the i region so there is no relevant generation of carriers in P region and the main current is drift current in i region; 2) the diffusion current in the N region is taken into account and in P is neglected according to assumption 1; 3) there is no space charge effect-we consider the situation when the input signal is high but not that order of magnitude to create space charge effect; 4) the dark current is neglected because it is a few degrees of magnitude lower than the photocurrent; and 5) nonlinearity exists only as the consequence of the voltage drop on the load resistance, [10]. These assumptions are used to simplify model and they are valid if we deal with low, medium and high, but not overmuch high, incident light signal as in the case analyzed in [11,12].…”

Section: Equivalent Modelmentioning

confidence: 98%

“…All these subcircuits use resistance of 1 Ohm. These subcircuits solve the required carriers' concentrations given within the formulas (7a)-(7c) and (8a)-(8c), and diffusion current given by (12). The circuit presented in Fig.…”

Section: Equivalent Modelmentioning

confidence: 99%

“…The required concentrations for the case of Heaviside's time input excitation can be obtained from the results for Dirac's time input excitation. For the case of Dirac's input time excitation mean values, in space, for electrons and holes concentrations are already obtained in [12], given by:…”

Section: Equivalent Modelmentioning

confidence: 99%

See 3 more Smart Citations

An Unique SPICE Model of Photodiode with Slowly Changeable Carriers’ Velocities

Matavulj

Lazović

Radunovic

2010

J Infrared Milli Terahz Waves

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This paper deals with a relatively new SPICE model of a P-i-N photodiode. The model includes a change of velocities of electrons and holes, due to the voltage drop on the edges of the photodiode, which depends on the time form of input excitation. We have derived the model of the P-i-N photodiode for digital input excitation i.e. for Heaviside's square wave time excitation. The model is incorporated in SPICE program and simulated with it. The model and the limitations of the model itself are observed. The output results are compared with the similar ones. It is suggested when it is practical to use the model, and determined the photodiode working domain regime when the model gives accurate results.

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Section: Introductionmentioning

confidence: 87%

Section: Equivalent Modelmentioning

confidence: 98%

Section: Equivalent Modelmentioning

confidence: 99%

Section: Equivalent Modelmentioning

confidence: 99%

See 2 more Smart Citations

An Unique SPICE Model of Photodiode with Slowly Changeable Carriers’ Velocities

Matavulj

Lazović

Radunovic

2010

J Infrared Milli Terahz Waves

Self Cite

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Amplitude-phase cross talk as a deterioration factor of signal-to-noise ratio in phase-detection noise-cancellation technique for spectral pump/probe measurements and compensation of the amplitude-phase cross talk

Seto

Tarumi

Tokunaga

2018

Review of Scientific Instruments

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Noise cancellation of the light source is an important method to enhance the signal-to-noise ratio (SNR) and facilitate high-speed detection in pump/probe measurements. We developed a method to eliminate the noise for the multichannel spectral pump/probe measurements with a spectral dispersion of a white probe pulse light. In this method, the sample-induced intensity modulation is converted to the phase modulation of the pulse repetition irrespective of the intensity noise of the light source. The SNR is enhanced through the phase detection of the observed signal with the signal synchronized to the pulse repetition serving as the phase reference (synchronized signal). However, the shot-noise limited performance is not achieved with an intense probe light. In this work, we demonstrate that the performance limitation below the shot noise limit is caused by the amplitude-phase cross talk. It converts the amplitude noise into the phase noise and is caused by the space-charge effect in the photodetector, the reverse bias voltage drop across the load impedance, and the phase detection circuit. The phase delay occurs with an intense light at a PIN photodiode, whereas the phase is advanced in an avalanche photodiode. Although the amplitude distortion characteristics also reduce the performance, the distortion effect is equivalent to the amplitude-phase cross talk. We also propose possible ways to compensate the cross talk effect by using the phase modulation of the synchronized signal for the phase detection based on the instantaneous amplitude.

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