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Non-degenerate phase-sensitive amplification scheme using digital dispersion pre-equalization for unrepeated transmission.
Shimizu S, Kazama T, Kobayashi T, Umeki T, Enbutsu K, Kasahara R, Miyamoto Y. Shimizu S, et al. Opt Express. 2021 Mar 15;29(6):8451-8461. doi: 10.1364/OE.419782. Opt Express. 2021. PMID: 33820292 Free article.
Chromatic dispersion (CD) compensation is required for phase-sensitive amplification after fiber transmission. In the conventional transmitter configuration for ND-PSAs in which phase-conjugated light (idler light) is optically generated, it is necessary to opticall …
Chromatic dispersion (CD) compensation is required for phase-sensitive amplification after fiber transmission. In the conventional tr …
Pre-equalization scheme for visible light communications with trial-and-error learning.
Li S, Zou Y, Liu F, Song J. Li S, et al. Opt Lett. 2024 Mar 15;49(6):1636-1639. doi: 10.1364/OL.516235. Opt Lett. 2024. PMID: 38489470
Instead, it allows the pre-equalizer to be trained directly from the transmitter side through continuous interaction with the actual system. In a 1.95-Gbps 64-QAM carrier-less amplitude phase (CAP) free space optical transmission platform, the proposed scheme demonstrates …
Instead, it allows the pre-equalizer to be trained directly from the transmitter side through continuous interaction with the actual system. …
Experimental demonstration of 16QAM/QPSK OFDM-NOMA VLC with LDPC codes and analog pre-equalization.
Cai Y, Chen M, Deng A, Wang D, Wang L, Gao X, Zhou J, Liu Y, Xiang C. Cai Y, et al. Appl Opt. 2022 Jul 1;61(19):5585-5591. doi: 10.1364/AO.460839. Appl Opt. 2022. PMID: 36255785
In this paper, we experimentally demonstrate a low-density parity-check (LDPC) codes-enabled 16QAM/QPSK modulation scheme for the orthogonal frequency-division multiplexing-based NOMA-VLC transmission system. Moreover, the analog pre-equalization technique is employ …
In this paper, we experimentally demonstrate a low-density parity-check (LDPC) codes-enabled 16QAM/QPSK modulation scheme for the orthogonal …
Time-domain digital pre-equalization for band-limited signals based on receiver-side adaptive equalizers.
Zhang J, Yu J, Chi N, Chien HC. Zhang J, et al. Opt Express. 2014 Aug 25;22(17):20515-29. doi: 10.1364/OE.22.020515. Opt Express. 2014. PMID: 25321257 Free article.
We theoretically and experimentally investigate a time-domain digital pre-equalization (DPEQ) scheme for bandwidth-limited optical coherent communication systems, which is based on feedback of channel characteristics from the receiver-side blind and adaptive equaliz …
We theoretically and experimentally investigate a time-domain digital pre-equalization (DPEQ) scheme for bandwidth-limited opt …
Magnetic field gradient waveform correction of motion-sensitized SPRITE by pre-equalization.
Adair A, Goora FG, Newling B. Adair A, et al. J Magn Reson. 2019 Jan;298:58-63. doi: 10.1016/j.jmr.2018.11.007. Epub 2018 Nov 27. J Magn Reson. 2019. PMID: 30529892
Eddy currents caused by pulsed field gradients in magnetic resonance measurements of high-speed flow cause the magnetic field gradient amplitude waveform experienced by the sample to be different from the waveform demanded of the magnetic field gradient amplifiers. By measuring a …
Eddy currents caused by pulsed field gradients in magnetic resonance measurements of high-speed flow cause the magnetic field gradient ampli …
Velocity mapping of fast flows using a linearly ramped gradient waveform.
Adair A, Balcom BJ, Newling B. Adair A, et al. J Magn Reson. 2020 Jul;316:106754. doi: 10.1016/j.jmr.2020.106754. Epub 2020 Jun 4. J Magn Reson. 2020. PMID: 32540728
We report a new pure phase encoding measurement for velocity mapping. Velocity-sensitization is achieved using a repeating, linearly ramped gradient waveform instead of rectangular bipolar pulsed field gradients. ...
We report a new pure phase encoding measurement for velocity mapping. Velocity-sensitization is achieved using a repeating, linearly …
Linewidth-tolerant real-time 40-Gbit/s 16-QAM self-homodyne detection using a pilot carrier and ISI suppression based on electronic digital processing.
Nakamura M, Kamio Y, Miyazaki T. Nakamura M, et al. Opt Lett. 2010 Jan 1;35(1):13-5. doi: 10.1364/OL.35.000013. Opt Lett. 2010. PMID: 20664657
We achieved bit-error rates of <10(-9) using an external-cavity laser diode with a linewidth of 200 kHz and <10(-7) using a distributed-feedback laser diode with a linewidth of 30 MHz, thanks to the phase-noise canceling capability provided by self-homodyne detection …
We achieved bit-error rates of <10(-9) using an external-cavity laser diode with a linewidth of 200 kHz and <10(-7) using a distribute …
Linewidth-tolerant 10-Gbit/s 16-QAM transmission using a pilot-carrier based phase-noise cancelling technique.
Nakamura M, Kamio Y, Miyazaki T. Nakamura M, et al. Opt Express. 2008 Jul 7;16(14):10611-6. doi: 10.1364/oe.16.010611. Opt Express. 2008. PMID: 18607475 Free article.
Error-free operation, a bit-error rate (BER) of <10(-9) was achieved in transmission over 120 km of standard single mode fiber (SSMF) without any dispersion compensation. The phase-noise canceling capability provided by a pilot-carrier and standard electronic pre …
Error-free operation, a bit-error rate (BER) of <10(-9) was achieved in transmission over 120 km of standard single mode fiber (SSMF) wit …