SOA-MZI All-Optical RoF Signal Mixing

Kastritsis, Dimitrios; Zoiros, Kyriakos E.; Rampone, Thierry; Sharaiha, Ammar

doi:10.1109/icton.2019.8840153

Cited by 2 publications

(4 citation statements)

References 6 publications

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“…On the other hand, the signal to be sampled, at the frequency f A , must be below the cutoff frequency of the XPM process, which depends on the dynamics of the SOA carriers. As a consequence, the analog bandwidth of the SOA-MZI photonic sampler is limited by the XPM bandwidth, which is between 5 and 6 GHz for the specific operating conditions used in this paper [28].…”

Section: Principle Of Operation Of the Post-distortion Linearization ...mentioning

confidence: 99%

“…The signal processing that follows is performed on the pulse peaks which are the samples that result from the sinusoidal signals' sampling. The peak power of P C input pulses, P C,peak , is approximately calculated from: , , , C ave C peak C fwhm P P f T = (28) where P C,ave is the average power of P C , f C is the sampling rate and T fwhm is the full-width at half-maximum pulse width. In our case, P C,ave = -15 dBm, f C = 10 GHz and T fwhm = 12.6 ps, and thus P C,peak is approximately 0.25 mW or -6 dBm.…”

Section: Sampled Sinusoidal Signals and Linearizationmentioning

confidence: 99%

“…High THD may signify interference for other equipment or require elaborate filtering at the expense of increased cost and complexity of the ARoF link. Recently, THD has been evaluated for the SOA-MZI photonic sampler in [17,28]. Applying the post-distortion linearization technique tο this case aims exactly at minimizing THD of the SOA-MZI photonic sampler.…”

Section: Introductionmentioning

confidence: 99%

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SOA-MZI photonic sampler with a post-distortion linearization technique

et al. 2021

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We present a post-distortion linearization technique for a semiconductor optical amplifier Mach-Zehnder interferometer (SOA-MZI) photonic sampler. The sampling source is an active mode-locked laser producing 12.6 ps-width pulses with a repetition frequency of 10 GHz. The mathematical model for the linearization technique is presented and then evaluated for the quasi-static regime, i.e. sampling continuous-wave signals, and for the dynamic regime, i.e. sampling sinusoidal signals. A significant improvement in terms of total harmonic distortion (THD) equal to 23.4 dB is observed for a modulation index equal to 80% in the quasi-static regime, matching the highest observed THD improvement in the dynamic regime.

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Section: Principle Of Operation Of the Post-distortion Linearization ...mentioning

confidence: 99%

Section: Sampled Sinusoidal Signals and Linearizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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SOA-MZI photonic sampler with a post-distortion linearization technique

et al. 2021

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“…In our recent works [15]- [16], we have experimentally demonstrated a new Modulation architecture and we have compared its performance in terms of the CG against the established Switching architecture, both based on the SOA-MZI photonic sampler. In [15], a very high CG up to 22 dB was achieved, where a 1 GHz was up-converted to 9 GHz, which was adjacent to the 1 st harmonic of the mode-locked laser.…”

Section: Introductionmentioning

confidence: 99%

Modulation and Switching Architecture Performances for Frequency Up-Conversion of Complex-Modulated Data Signals Based on a SOA-MZI Photonic Sampling Mixer

Kastritsis¹,

Rampone²,

Zoiros³

et al. 2020

J. Lightwave Technol.

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A theoretical and experimental performance analysis of a Semiconductor Optical Amplifier -Mach-Zehnder Interferometer (SOA-MZI) photonic sampling mixer used as a frequency up-converter is presented employing Switching and Modulation architectures. An active mode-locked laser, generating 2 ps-width pulses at a repetition rate equal to 10 GHz, is used as a sampling source. An optical carrier intensity modulated by a sinusoidal signal at 1 GHz is up-converted to 9 GHz and 39 GHz. High Conversion Gains (CGs) of about 15 dB are demonstrated for the frequency conversion to 9 GHz using both architectures, whereas up to 4 dB and 9 dB for the conversion to 39 GHz employing Switching and Modulation architectures, respectively. Small-signal equations for the up-converted signal in both architectures are formulated and developed, which permit to quantify the CG from closed-form expressions. The numerically calculated CG values are in very good agreement with those obtained experimentally. The validated equations are subsequently employed to explain the performance differences between the two architectures in terms of the CG. Furthermore, signals modulated by QPSK and 16-QAM complex modulation formats at different baud rates are up-converted from 750 MHz to 9.25 GHz and 39.75 GHz and their Error Vector Magnitude is evaluated and compared. The maximum bit rate that meets the Forward Error Correction (FEC) limit is achieved using the Modulation architecture. It is 1 Gbps and 512 Mbps for QPSK and 16-QAM modulations, respectively.

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SOA-MZI All-Optical RoF Signal Mixing

Cited by 2 publications

References 6 publications

SOA-MZI photonic sampler with a post-distortion linearization technique

SOA-MZI photonic sampler with a post-distortion linearization technique

Modulation and Switching Architecture Performances for Frequency Up-Conversion of Complex-Modulated Data Signals Based on a SOA-MZI Photonic Sampling Mixer

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