A. Udalcovs

Publications107
h-index14
Citations584
Highly Influential Citations23
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100 GHz EML for High Speed Optical Interconnect Applications
We report on a 116 Gbit/s OOK, 4PAM and 105 Gbit/s 8PAM optical transmitter using InP-based integrated EML for interconnect applications with up to 30 dB static extinction ratio and over 100 GHz 3 ...
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100 GHz Externally Modulated Laser for Optical Interconnects
We report on a 116 Gb/s on-off keying (OOK), four pulse amplitude modulation (PAM) and 105-Gb/s 8-PAM optical transmitter using an InP-based integrated and packaged externally modulated laser for… Expand
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140/180/204-Gbaud OOK Transceiver for Inter- and Intra-Data Center Connectivity
TLDR
We report on an on–off keying intensity-modulation and direct-detection C-band optical transceiver capable of addressing all datacenter interconnect environments at well beyond 100Gbaud. Expand
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204-GBaud On-Off Keying Transmitter for Inter-Data Center Communications
TLDR
We demonstrate an on-off keyed transmitter with direct detection, at record symbol rates of 204Gbaud and 140Gbaud, over 10km and 80km, respectively, powered by a high-speed InP-based 2:1 selector and travelling-wave electro-absorption laser-modulator. Expand
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Spectrally efficient digitized radio-over-fiber system with k-means clustering-based multidimensional quantization.
TLDR
We propose a spectrally efficient digitized radio-over-fiber (D-RoF) system by grouping highly correlated neighboring samples of the analog signals into multidimensional vectors, where the k-means clustering algorithm is adopted for adaptive quantization. Expand
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7×149 Gbit/s PAM4 Transmission over 1 km Multicore Fiber for Short-Reach Optical Interconnects
We transmit 80 Gbaud/λ/core PAM4 signal enabled by 1.55 μm EML over 1 km 7-core fiber. The solution achieves single-wavelength and single-fiber 1.04 Tbit/s post-FEC transmission enhancing… Expand
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Experimental Study of 1.55- $\mu$ m EML-Based Optical IM/DD PAM-4/8 Short Reach Systems
We experimentally evaluate high-speed intensity modulation/direct detection (IM/DD) transmissions with a 1.55-<inline-formula> <tex-math notation="LaTeX">$\mu \text{m}$ </tex-math></inline-formula>… Expand
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Digital mobile fronthaul employing differential pulse code modulation with suppressed quantization noise.
TLDR
A differential pulse code modulation (DPCM) based digital mobile fronthaul architecture is proposed and experimentally demonstrated. Expand
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Nonlinearity-aware 200  Gbit/s DMT transmission for C-band short-reach optical interconnects with a single packaged electro-absorption modulated laser.
We experimentally demonstrate the transmission of a 200 Gbit/s discrete multitone (DMT) at the soft forward error correction limit in an intensity-modulation direct-detection system with a single… Expand
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200 Gbps/Lane IM/DD Technologies for Short Reach Optical Interconnects
  • X. Pang, W. Hu, +10 authors S. Xiao
  • Computer Science
  • Journal of Lightwave Technology
  • 15 January 2020
TLDR
We focus on IM/DD transmissions, and provide an overview of recent research and development efforts on key enabling technologies for 200 Gbps per lane and beyond. Expand
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