Theoretical analysis and realization of optoelectrical predistortion optical transmitter for the simultaneous suppression of IM3 and IM5 signal

Lee, Tae-Kyeong; Moon, Young Tae; Kim, Hong-Seung; Choi, Young‐Wan

doi:10.1016/j.optcom.2012.02.006

Cited by 11 publications

(4 citation statements)

References 13 publications

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“…The overall goal is to cancel or eliminate the original distorted components in the RF signal. These techniques are generally simple and inexpensive but they are limited by the frequency bandwidth of the electrical circuits [51,53].…”

Section: Different Linearization Approachesmentioning

confidence: 99%

Adaptive High Linearity Intensity Modulator for Advanced Microwave Photonic Links

Dingel¹,

Madamopoulos²,

Prescod³

2017

Optical Communication Technology

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This chapter, first, presents the motivation behind the need for adaptive, highly linear electro-optic modulators and an overview of the different optical linearization approaches of electro-optic modulators. Then, the figures of merits in terms of linearity performance are described and analyzed. Next, the chapter focuses on one excellent linearization approach called interferometric modulator with phase-modulating and cavity-modulating components (IMPACC). Here, we model IMPACC by simulating each of the key building blocks separately before putting them together as IMPACC modulator. This adaptive IMPACC design is compared to typical Mach-Zehnder interferometer (MZI) based modulators, and ring-assisted Mach-Zenhder interferometer (RAMZI) modulators. Theoretical analysis and results show that the IMPACC provides both superior linearity performance and unique adaptive feature that can be used to compensate for manufacturing tolerances, thus, providing extra flexibility in terms of device manufacturability as well as system integration.

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Section: Different Linearization Approachesmentioning

confidence: 99%

Adaptive High Linearity Intensity Modulator for Advanced Microwave Photonic Links

Dingel¹,

Madamopoulos²,

Prescod³

2017

Optical Communication Technology

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“…We use the proposed nonlinear model on analog amplifier to analyze the suppression in IMD3 and IMD5 theoretically. The amplifier nonlinearity can be expressed with a Taylor series equation [8,9,19] connecting the output power to input signal in by (1); 1 2 3 are constants.…”

Section: Theoretical Analysismentioning

confidence: 99%

“…The comparison of reduction with secondorder versus third-order signal before distortion method for TWT is studied by Singh in detail in her experiment [5][6][7]. In other areas of electronic device, An optoelectrical predistortion optical transmitter system is designed by Lee et al [8]. This presents that the simultaneous suppressions of IMD3 and IMD5 are achieved by choosing an appropriate bias current and RF input power for the LD.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Suppression of IMD3 and IMD5 in Space TWT by IMD3 and 2HD Signal Injection

Zhao

Liu

Xia

et al. 2017

Active and Passive Electronic Components

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This paper presents a signal injection technology showing significant reductions in both 3rd-order and 5th-order intermodulation distortions (IMD3 and IMD5) in space traveling wave tube (STWT). By applying the IMD3 to the IMD5 ratio (TFR) as measures of location, the simultaneous suppressions of IMD3 and IMD5 in TWT are achieved by second harmonic distortion (2HD) and IMD3 injection. According to the research on theoretical analysis and computer simulation, the optimum amplitude and phase parameters of the injected signal for maximum simultaneous suppressions are obtained. Then an experiment system is established based on vector network analyzer, optimum TFR are 2.1 dB and 12.5 dB, respectively, by second harmonic and IM3 injection, and the output powers of IMD3 and IMD5 were decreased. TFR with IMD3 injection is smaller than that with second harmonic injection in STWT, and the experiment system is more straightforward and easy to operate. Thus, the IMD3 injection performs better than that of second harmonic injection to suppress IMD5s for the narrow-band STWT.

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“…The characteristics of intermodulation distortion in DFB laser diodes are analyzed by Chen et al [17]. In optical transmitters, conventional linearization techniques include predistortion, feedforward and feedback harmonic injection schemes [18][19][20][21][22]. A tapered cavity structure for bisection gain lever laser diodes for distortion reduction and improvement in gain lever was proposed by Rana et al [13].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the effect of optical confinement factor on the distortion performance of gain lever laser diode

Piramasubramanian

Madhan

2015

Optik

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Theoretical analysis and realization of optoelectrical predistortion optical transmitter for the simultaneous suppression of IM3 and IM5 signal

Cited by 11 publications

References 13 publications

Adaptive High Linearity Intensity Modulator for Advanced Microwave Photonic Links

Adaptive High Linearity Intensity Modulator for Advanced Microwave Photonic Links

Simultaneous Suppression of IMD3 and IMD5 in Space TWT by IMD3 and 2HD Signal Injection

Analysis of the effect of optical confinement factor on the distortion performance of gain lever laser diode

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