Search results for: E Tipsuwannakul
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We experimentally investigate the fiber-Bragg grating (FBG)-induced group-delay ripple (GDR) mitigation capability of coherent receivers. We also show that 112-Gbit/s DP-QPSK systems with electronic-dispersion compensation (EDC) and FBG-based devices provide similar performances over 840-km transmission.
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This paper experimentally presents the first direct comparison between two 120-Gbit/s 8-ary formats and show that both can be superior over different distances. The performances of two formats are also evaluated over three different dispersion-maps.
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The feasibility of transmitting 0.87 Tbit/s dual polarization D8PSK-OTDM over 110 km is, for the first time, demonstrated along with 0.44 Tbit/s single polarization D8PSK-OTDM over 220 km in conventional 55-km span SMF+DCF link.
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For the first time, we experimentally demonstrate a modulation-format independent, WDM-compatible link concept with up to 6-dB SNR advantage over conventional EDFA amplified links, by using a frequency-non-degenerate copier and phase-sensitive fiber amplifier based design.
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In this paper, 40 Gbaud transmission of single polarization (SP) and Polarization-Multiplexed (PM), RZ-DQPSK and RZ-D8PSK signals is analyzed numerically. The impact of nonlinear crosstalk arising from the presence of neighbouring intensity-modulated channels is analyzed in terms of required OSNR for the BER of 10-3 versus launch power.
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IEEE Photonics Technology Letters > 2010 > 22 > 18 > 1376 - 1378
The letter discusses the tolerance against transmission impairments, i.e., chromatic dispersion, filtering, and self-phase modulation over a 320-km transmission link of 40-Gbaud single-polarization return-to-zero (RZ) eight-level differential phase-shift keying (D8PSK) in comparison to those of RZ binary DPSK and RZ quadrature DPSK at the same baud rate.
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We present the first demonstration of 40 Gbaud PM-RZ-D8PSK and its successful transmission in a 100 GHz-spaced 10 Gb/s NRZ-OOK WDM system over a 320-km transmission link along with the studies of WDM nonlinear crosstalk.
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IEEE Photonics Technology Letters > 2009 > 21 > 22 > 1680 - 1682
We have, for the first time, experimentally investigated 112-Gb/s polarization-multiplexed return-to-zero differential 8-ary phase-shift keying (PM-RZ-D8PSK) with differential detection in terms of optical signal-to-noise ratio requirement, group velocity dispersion (GVD), and differential group delay (DGD) tolerances, together with a direct comparison with PM-RZ differential quadrature phase-shift...
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A 400 km standard single mode fiber (SSMF) link with a single light-intensity modulator was upgraded for simultaneous transmission of STM-16 2.5 Gbps baseband data and digital-video-broadcast-terrestrial DVBT utilizing a 40 GHz subcarrier. An optical circulator and narrowband fiber Bragg gratings (FBG) were used to separate the signals in the optical domain and allow for simple direct baseband detection...
