640 Gbit/s and 128 Tbit/s polarisation insensitive all optical wavelength conversion

Hu, Hao; Palushani, Evarist; Galili, Michael; Mulvad, Hans Christian Hansen; Clausen, A.T.; Oxenløwe, Leif Katsuo; Jeppesen, P.

doi:10.1364/oe.18.009961

Cited by 86 publications

(42 citation statements)

References 11 publications

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“…The 10-GHz pulses are spectrally broadened in a 200-m dispersion-flattened HNLF (DF-HNLF1, dispersion slope S = 0.017 ps/nm 2 /km at 1550 nm, zero-dispersion wavelength at 1553.3 nm, nonlinear coefficient γ = 10.5 W −1 km −1 ) by self-phase modulation (SPM) [16]. The output spectrum of DF-HNLF1 is split and filtered at two wavelengths to obtain data and control signals.…”

Section: Methodsmentioning

confidence: 99%

4 × 160-Gbit/s multi-channel regeneration in a single fiber

Wang¹,

Ji²,

Hu³

et al. 2014

Opt. Express

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Simultaneous regeneration of four high-speed (160 Gbit/s) wavelength-division multiplexed (WDM) and polarization-division multiplexed (PDM) signals in a single highly nonlinear fiber (HNLF) is demonstrated. The regeneration operation is based on four-wave mixing in HNLF, where the degraded data signals are applied as the pump. As a result, the noise on both '0' and '1' levels can be suppressed simultaneously in our scheme. The stimulated Brillouin scattering (SBS) from the continuous wave (CW) is suppressed by cross-phase modulation (XPM) from the data pump, relieving the requirement of external phase modulation of the CW light. Mitigation of the inter-channel nonlinearities is achieved mainly through an inter-channel 0.5 bit slot time delay. Bidirectional propagation is also applied to relieve the inter-channel four-wave mixing. The multi-channel regeneration performance is validated by bit-error rate (BER) measurements. The receiver powers at the BER of 10 −9 are improved by 1.9 dB, 1.8 dB, 1.6 dB and 1.5 dB for the four data channels, respectively. ©2014 Optical Society of America

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Section: Methodsmentioning

confidence: 99%

4 × 160-Gbit/s multi-channel regeneration in a single fiber

Wang¹,

Ji²,

Hu³

et al. 2014

Opt. Express

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“…The 10-GHz pulses are compressed in a 400-m dispersion-flattened highly nonlinear fiber (DF-HNLF) followed by 20 m of standard single-mode fiber. The compressed pulse with a broadened spectrum [2] at the output of the DF-HNLF is split into two pulses (one for the signal and another for the pulsed pump). For the WC with CW-pumping scheme, the CW pump wave is generated from a tunable external-cavity laser (ECL).…”

Section: Tunable Wavelength Conversion Experimentsmentioning

confidence: 99%

“…It is desirable that the WC is tunable over a broad wavelength range for wavelength routing and switching. Several all-optical wavelength conversion (AOWC) techniques have been demonstrated using different components including highly nonlinear fibers (HNLFs) [2], photonic crystal fibers (PCFs), LiNbO 3 waveguides [3], and semiconductor optical amplifiers (SOAs). Recently, WC in silicon waveguides has also attracted considerable research interest due to compactness, broad bandwidth, and complementary metal-oxide-semiconductor (CMOS) compatibility [4].…”

Section: Introductionmentioning

confidence: 99%

15-THz Tunable Wavelength Conversion of Picosecond Pulses in a Silicon Waveguide

Galili

et al. 2011

IEEE Photon. Technol. Lett.

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Abstract-We demonstrate all-optical ultra-broadband tunable wavelength conversion of one-picosecond pulses based on four-wave mixing in a 3-millimeter long dispersion engineered silicon waveguide. In the waveguide, an input pulse with center wavelength at 1600 nm is down-converted by 135 nm (17.3 THz) to 1465 nm. A tuning range of 115 nm (15 THz, from 1465 nm to 1580 nm) of the converted wavelength is demonstrated, while keeping conversion efficiency, pulse shape and pulse width almost unchanged.

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“…This functionality has been demonstrated in different devices including semiconductor optical amplifiers (SOAs) [1], periodically poled lithium niobate (PPLN) waveguides [2], and highly nonlinear fibers (HNLFs) [3], based on different nonlinear effects. Recently, nonlinear effects in silicon nanowires have attracted considerable research interests due to compactness, large conversion bandwidth and complementary metal-oxide-semiconductor (CMOS) compatibility.…”

Section: Introductionmentioning

confidence: 99%

Broadband Polarization-Insensitive Wavelength Conversion Based on Non-Degenerate Four-Wave Mixing in a Silicon Nanowire

et al. 2012

Conference on Lasers and Electro-Optics 2012

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We experimentally demonstrate broadband polarization-insensitive one-to-two wavelength conversion of a 10-Gb/s DPSK data signal based on non-degenerate four-wave mixing in a silicon nanowire with bit-error rate measurements. IntroductionAll-optical wavelength conversion (AOWC) may be an important functionality in future wavelength division multiplexing (WDM) networks. This functionality has been demonstrated in different devices including semiconductor optical amplifiers (SOAs) [1], periodically poled lithium niobate (PPLN) waveguides [2], and highly nonlinear fibers (HNLFs) [3], based on different nonlinear effects. Recently, nonlinear effects in silicon nanowires have attracted considerable research interests due to compactness, large conversion bandwidth and complementary metal-oxide-semiconductor (CMOS) compatibility. Due to the strong light confinement in silicon nanowires with sub-micron dimensions, the group velocity dispersion (GVD), which is a critical parameter for parametric processes, can be engineered, and thus one can achieve ultra-broadband wavelength conversion [4]-[6] based on four-wave mixing (FWM). The FWM process is normally highly polarization dependent and an efficient FWM process occurs when the input signal and pump waves are both aligned to either the transverse-electric (TE) mode or the transversemagnetic (TM) mode. However, a polarization insensitive operation is desired since the state of polarization (SOP) of the input signal fluctuates with time and distance in a real transmission system. Previously, a polarizationinsensitive FWM-based AOWC technique using an angled-pump scheme has been proposed [7]. However, it is challenging to realize a broadband polarization-insensitive conversion which requires simultaneous optimization of dispersion profiles of the silicon nanowire for both TE and TM polarizations. The conversion bandwidth can be enhanced if the dispersion requirements are relaxed by utilizing a dual-pump configuration [8], in which the two pumps have large frequency separation while the signal frequency is close to one of the pump frequencies. In this paper, we utilize a dual-pump scheme to experimentally demonstrate broadband polarization-insensitive AOWC of a 10-Gb/s differential phase-shift keying (DPSK) data signal based on non-degenerate FWM in a silicon nanowire.

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640 Gbit/s and 128 Tbit/s polarisation insensitive all optical wavelength conversion

Cited by 86 publications

References 11 publications

4 × 160-Gbit/s multi-channel regeneration in a single fiber

4 × 160-Gbit/s multi-channel regeneration in a single fiber

15-THz Tunable Wavelength Conversion of Picosecond Pulses in a Silicon Waveguide

Broadband Polarization-Insensitive Wavelength Conversion Based on Non-Degenerate Four-Wave Mixing in a Silicon Nanowire

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