Multilevel Signalling for High-Speed Optical Transmission

Kikuchi, Nobuhiko; Sekine, Keitaro; Sasaki, Shinya

doi:10.1109/ecoc.2006.4801061

Cited by 16 publications

(6 citation statements)

References 16 publications

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“…BER was measured by an error detector (ED), while the constellation was simultaneously observed using an oscilloscope. However, a better modulator response can be expected through the modification of the modulator design [1,7]. Another reason for the comparatively unclear constellations in the 10 Gsymbol/s detection is that they were observed at the same received optical power of -20 dBm.…”

mentioning

confidence: 94%

Linewidth-tolerant 30 Gbit/s 8-PSK self-homodyne using single modulator and phase-noise cancelling technique

2009

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mentioning

confidence: 94%

Linewidth-tolerant 30 Gbit/s 8-PSK self-homodyne using single modulator and phase-noise cancelling technique

2009

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“…The device has an extinction ratio (ER) of >26 dB, but its insertion loss is relatively high‐ 30 dB. 8PSK, on the other hand, is another choice that can withstand nonlinear effects and has a mild implementation complexity, 11,12 allowing for more demodulation versatility 13,14 . Previously, 8PSK was generated by using quad‐parallel MZM to combine four BPSK signals 11 .…”

Section: Introductionmentioning

confidence: 99%

Optical 8‐ary phase shift keying modulation format generator based on three microring modulators

Singha

Bhowmik

Sinha

et al. 2022

Micro & Optical Tech Letters

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We have proposed an 8PSK modulator based on three microring modulators (MRM). The design consists of three MRMs, each with a radius of 11.1 μm. Of these three, two MRMs are connected in parallel and they together generate a quadrature phase shift keying (QPSK) signal. While at the output port of the QPSK, a third MRM is connected in series works as an angle modulator, which is basically a 45° phase shift modulator; that is, the output of the MRM varies by 45° depending on the bit pattern fed to it, ‘0’or ‘1’ respectively. We have simulated and shown the performance of the proposed 8PSK modulator after transmitting the modulated signal through various lengths of optical. Constellation diagrams and eye diagrams at different fiber lengths are analyzed. Bit error rate (BER) versus optical signal to noise ratio curve shows that, 10−3 BER has been achieved at 13.5 dB optical signal to noise ratio.

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“…The device has an extinction ratio (ER) of > 26 dB, but its insertion loss is relatively high-30 dB. 8PSK, on the other hand, is another choice that can withstand nonlinear effects and has a mild implementation complexity [37,38], allowing for more demodulation versatility [20,39]. In the past, 8PSK was generated by using quad-parallel MZM to combine four BPSK signals [37].…”

Section: Introductionmentioning

confidence: 99%

“…8PSK, on the other hand, is another choice that can withstand nonlinear effects and has a mild implementation complexity [37,38], allowing for more demodulation versatility [20,39]. In the past, 8PSK was generated by using quad-parallel MZM to combine four BPSK signals [37]. Using the series arrangement of IQ modulator with dual-drive MZM was recently demonstrated, which allowed achieving higher-order modulation formats [40][41][42].…”

Section: Introductionmentioning

confidence: 99%

Optical 8PSK Modulation Format Generator Basedon Three Microring Modulators

Singha

Bhowmik

Sinha

et al. 2021

Preprint

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We have proposed an 8PSK modulator based on three microring modulators (MRM). The design consists of three MRMs, each with a radius of 11.1μm. Of these three, two MRMs are connected in parallel and they together generate a QPSK (Quadrature phase shift keying) signal. While at the output port of the QPSK, a third MRM is connected in series works as an angle modulator, which is basically a 45o phase shift modulator; i.e., the output of the MRM varies by 45o depending on the bit pattern fed to it, ’0’or ’1’ respectively. In the result section, we have simulated and shown the performance of the proposed 2.5 GBaud 8PSK modulator after transmitting the modulated signal through various lengths of optical fiber. The bit error rate (BER) vs. optical signal to noise ratio (OSNR) curve shows that, 10−3BER has been achieved at 13.5dB OSNR.

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Multilevel Signalling for High-Speed Optical Transmission

Cited by 16 publications

References 16 publications

Linewidth-tolerant 30 Gbit/s 8-PSK self-homodyne using single modulator and phase-noise cancelling technique

Linewidth-tolerant 30 Gbit/s 8-PSK self-homodyne using single modulator and phase-noise cancelling technique

Optical 8‐ary phase shift keying modulation format generator based on three microring modulators

Optical 8PSK Modulation Format Generator Basedon Three Microring Modulators

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