Photo-parametric amplifier/converter in subcarrier multiplexed lightwave communication systems

Khanifar, A.; Green, R.J.

doi:10.1109/mwsym.1992.188097

Cited by 6 publications

(3 citation statements)

References 2 publications

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“…These amplifiers are based on the nonlinear capacitance with the principle noise limitation being the parasitic series resistance within a photodiode. The PPA with local pump source has been shown to work in several configurations [6][7][8][9] in both degenerate and non-degenerate mode. Investigative work suggests that it offers potential advantages over a conventional receiver (PD followed by preamplifier) with respect to tunability [8] and noise performance [6,[10][11][12]; Also, in [7,13], it has been shown that the PPA is a useful system for optical communication and can give better SNR performance than a photomultiplier for up to few hundred MHz bandwidth.…”

Section: Photoparametric Amplifermentioning

confidence: 99%

Load analysis with gain enhancement for the Photo Parametric Amplifier (PPA)

Alhagagi

Green

2012

2012 14th International Conference on Transparent Optical Networks (ICTON)

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In previous work the PPA was shown to behave more optimally with a load resistance which was much lower than normally used in the common optical wireless receiver-amplifiers, such as the High Impedance-or Transimpedance type. This paper discusses the use of a zero bias mode combined with low load impedance, which results in further enhancements in receiver performance. An optimised load is usually a pure resistance, typically several ohms, giving around 8.6 dB improvement in gain over a 50 Ω standard load impedance, but output impedance matching to 50 Ω can permit a similar optimum gain over a wider range of frequencies.

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Section: Photoparametric Amplifermentioning

confidence: 99%

Load analysis with gain enhancement for the Photo Parametric Amplifier (PPA)

Alhagagi

Green

2012

2012 14th International Conference on Transparent Optical Networks (ICTON)

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“…13 There are many different types of optoelectronic mixers based on positive-intrinsic-negative (PIN) PDs. [14][15][16][17][18] In the optoelectronic mixer, the frequency mixing occurs due to the PIN-PD responsivity dependence on a bias voltage. In other words, the intensity-modulated optical signal is detected by a PD with a certain modulated sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Quadrature amplitude modulation frequency up- and down-conversions using a positive-intrinsic-negative photodiode sampling mixer

Termos

Mansour

2022

Opt. Eng.

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. Simulation and experimental performance analysis of a positive-intrinsic-negative photodiode (PIN-PD) sampling mixer used as frequency up and down-converters are presented. Besides, a frequency mixing with a PIN-PD can operate in a frequency range up to 47.3 GHz for up-conversion and 38.5 GHz for down-conversion. The design and operating regime peculiarities of a PIN-PD as an up and down-converter in a radio over fiber (RoF) system are also discussed. The conversion gain of a PIN-PD sampling mixer is simulated and measured. We showed that the gain may decrease from 27 dB at a mixing frequency of 8.3 GHz to 3 dB at the one with 47.3 GHz in an up-conversion mode and from 26.5 dB at 31.7 GHz to 7 dB at 38.5 GHz in a down-conversion mode, when the PIN-PD bias voltage was 0 V. The conversion gain degrades with the decrease of the bias voltage from 0 to −5 V. Error vector magnitudes (EVMs) of the quadratic amplitude modulation (M-QAM) up and down-converted signals are investigated. Quadrature phase shift keying (QPSK) data at bit rates between 312.5 Mbit / s and 5 Gbit / s are frequency-converted. The EVM is used a performance index to assess the mixing system. Exploitable EVMs in the range of 15% up to 34.9% are reached for up-conversion of the mixing frequency. For down-conversion, the EVM varies from 20% to 34.9% at 5 Gbit / s over the whole frequency range. The EVM of mixed signals is improved with 16-QAM and 64-QAM modulations.

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“…Literature review concerning the photo parametric amplification technique is used as the basic, where the work have been discussed in [1][2][3][4][5]. In conventional photo parametric amplifier circuit at high sensitivity circuits, the total input source Pump (LO) can severely limit the available bandwidth from the circuit.…”

Section: Introductionmentioning

confidence: 99%

Photo Parametric Amplifier Using Up & Down Converter Configuration for Optical Receiver

Abdullah

Elbireki

2012

Journal of Optical Communications

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A fundamental requirement in the design of an optical receiver is the achievement of high sensitivity and broad bandwidth. These two features are very important in getting reliable system. In this project a receiver circuit based on Photo parametric Amplifier (PPA), which is suggested as one of the alternative for receiver detection and amplification techniques is fully described. The PPA mode of operation involves optical detection and amplification within a single device. It is able to provide selectivity and sensitivity at the same time, as required for wireless optical communications. The most common problem that any communication system might face is the noise which must be eliminated or at least reduce it. In order to reduce the noise, filters have been implemented before the signal is passes through an amplifier. In this project an Up converter has been placed at the transmitter circuit in order to obtain high frequency, while at the receiver circuit, filters has been placed with Down converter to obtain the desired frequency. Photo diode, PIN type has been used to detect any incoming signal at the receiver circuit. Results showed that the output signal has been improved; with addition power strength and noise reduction which showed that photo parametric amplifier is more reliable and suitable to be used in wireless optical communication system.

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Photo-parametric amplifier/converter in subcarrier multiplexed lightwave communication systems

Cited by 6 publications

References 2 publications

Load analysis with gain enhancement for the Photo Parametric Amplifier (PPA)

Load analysis with gain enhancement for the Photo Parametric Amplifier (PPA)

Quadrature amplitude modulation frequency up- and down-conversions using a positive-intrinsic-negative photodiode sampling mixer

Photo Parametric Amplifier Using Up & Down Converter Configuration for Optical Receiver

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