A photonic BPSK modulation with 2.5 GHz RF signal from a microwave optoelectronic oscillator

Panasiewicz, Jognes; Pacheco, Gefeson Mendes

doi:10.1109/imoc.2015.7369209

Cited by 1 publication

(1 citation statement)

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“…Despite the figures were acquired with a bit rate of 50 Mbps, several different values of bit rates were verified. A similar photonic system was proposed earlier by the authors and it was possible to generate a 2.5 GHz RF carrier, which was modulated in BPSK scheme up to a data rate of 2 Mbps [16].…”

Section: B Mpvmmentioning

confidence: 99%

A photonic QPSK modulation in 2 GHz with an RF signal from a microwave optoelectronic oscillator

Panasiewicz

Larissa

Pacheco

et al. 2018

2018 International Topical Meeting on Microwave Photonics (MWP)

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This article presents a photonic circuit that achieves direct carrier QPSK modulation of an RF signal from an optoelectronic oscillator (OEO) suitable for satellite data transmitter. The circuit was implemented with three Mach-Zehnder optical modulators. One modulator was used to construct an OEO to generate a carrier with a frequency equal to 2.019 GHz. The others two modulators were used to compose the microwave photonic I/Q modulator. The setup initially achieved a data rate of 50 Mbps in a QPSK scheme with an EVM of 7.5%. Using a root-raised-cosine filter, it was possible to reduce the EVM to 5%. The diagrams of the optoelectronic circuit and the modulation measurements are displayed. After the EVM analysis, the modulated signal was demodulated through an actual satellite receiver. Using the demodulator, it was possible to measure the BER and consequently the degradation analysis. The degradation for a bit rate of 100 Mbps was 0.07 dB using the OEO as RF generator. In this case, the values of E b /N0 and BER were 11.37 dB and 10 −7 , respectively.

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Section: B Mpvmmentioning

confidence: 99%