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QPSK Transmission over Free-Space Link at 3.8 ?m using Coherent Detection with Wavelength Conversion
QPSK Transmission Free-Space Link Coherent Detection Wavelength Conversion
2008/7/31
We demonstrate the first mid-infrared free-space optical link employing coherent detection and parametric wavelength conversion.
Transmission of Five M-QAM Signals over a 4.4 km Silica Graded-index Multimode Fibre Link Using Subcarrier Multiplexing
Transmission Five M-QAM Signals Silica Graded-index Multimode Fibre Subcarrier Multiplexing
2008/7/31
We experimentally demonstrate five-subcarrier multiplexed M-QAM transmission over a 4.4km silica multimode fibre. Low EVM was achieved and 15.26 Gbit/s throughput may be reached in the 2 GHz-6 GHz pas...
1 Tb/s·km WDM Transmission over Multimode Fibre Link
WDM Transmission Multimode Fibre Link
2008/7/31
We demonstrate 1 Tb/s·km WDM error-free transmission (highest reported value to our knowledge) over a MMF link by a combination of low-linewidth lasers and central launch.
Transmission of 40-Gbit/s 16-QAM Signal over 100-km Standard Single- mode Fiber using Digital Coherent Optical Receiver
Transmission Signal over Standard Single- mode Fiber Digital Coherent Optical Receiver
2008/7/31
We demonstrate 100-km transmission of a 40-Gbit/s 16-QAM signal using a digital coherent receiver. The receiver sensitivity of -30 dBm is obtained at BER=10 -5
50-km SMF transmission of 50-Gb/s 16 QAM generated by quad-parallel MZM
SMF transmission QAM quad-parallel MZM
2008/7/31
We investigated transmission of 50Gb/s 16QAM over 50km SMF. 16QAM was electro-optically synthesized with a quad-parallel MZM; demodulated by off-line digital homodyne employing electric equalizers.
40 Gbit/s Directly Modulated Passive Feedback DFB Laser for Transmission over 320 km Single Mode Fibre
Modulated Passive Feedback DFB Laser Transmission Single Mode Fibre
2008/7/31
A passive feedback section 1.5 μm DFB laser is applied as 40 Gbit/s transmitter. The error free transmission over 320 km SMF demonstrates the good performance of this compact and low cost device.
Joint-Polarization Carrier Phase Estimation for XPM-Limited Coherent Polarization-Multiplexed QPSK transmission with OOK-neighbors
Carrier Phase Estimation XPM-Limited Coherent Polarization-Multiplexed QPSK transmission OOK-neighbors
2008/7/30
We demonstrate joint polarization carrier phase estimation for XPM-limited channels with significant improvements over standard methods, demonstrated on measurements of 43Gb/s NRZ-CP-QPSK with 10.7Gb/...
Solid low-bend-loss transmission fibers using resonant suppression of higher-order modes
transmission fibers resonant suppression higher-order modes
2008/7/30
Ring-assisted fibers suppress unwanted modes, improving the tradeoff that limits bend loss. Fabricated fibers achieve low bend loss and compatibility with standard fibers required for fiber to the hom...
Bend-Induced Transformation of the Transmission window of a Large-Mode-Area Bragg Fibre
Transmission window Large-Mode-Area Bragg Fibre
2008/7/30
We study the effect of bends on the transmission window of the first PCVD large-mode-area Bragg fibre. The origin and the consequences of this effect are also presented.
The transmission performance of wavelength division multiplexed chaotic signals is numerically investigated. The impact of transmitted power, bit-rate and channel arrangement on the overall performanc...
Chaotic Vertical-Cavity Surface-Emitting Laser for 1.4 GHz Message Transmission
Chaotic Vertical-Cavity Surface-Emitting Laser Message Transmission
2008/7/30
An experimental demonstration of GHz message encoding and decoding in unidirectionally coupled chaotic vertical-cavity surface-emitting lasers with polarisation-preserved optical injection.
True soliton transmission through ultra-long laser links
soliton transmission through laser links
2008/7/30
We present the first experimental demonstration of true (not loss managed) soliton pulse transmission in conventional optical fibre. Experimental FROG spectrograms and numerical simulations confirm th...
11.5-Gb/s OFDM Transmission over 640km SSMF using Directly Modulated Laser
OFDM Transmission SSMF Directly Modulated Laser
2008/7/30
We show 11.5-Gb/s optical OFDM transmission over 640km SSMF with directly modulated laser (DML) and direct-detection without dispersion compensation. DML can reduce the system complexity and cost.
Improved Nonlinear Tolerance of 112-Gb/s PDM-OFDM in Dispersion-Uncompensated Transmission with Efficient Channel Estimation
Nonlinear Tolerance PDM-OFDM Dispersion-Uncompensated Transmission Efficient Channel Estimation
2008/7/30
We show numerically that the nonlinear tolerance of a 112-Gb/s PDM-OFDM signal, coherently received with a robust and efficient channel estimation method, is substantially improved by fiber dispersion...
Multi-Rate (111-Gb/s, 2x43-Gb/s, and 8x10.7-Gb/s) Transmission at 50-GHz Channel Spacing over 1040-km Field-Deployed Fiber
Multi-Rate Transmission Channel Spacing over Field-Deployed Fiber
2008/7/30
111-Gb/s transmission combined with 2x43-Gb/s and 8x10.7-Gb/s on a 50-GHz grid over 1,040-km field fiber and two ROADMs is demonstrated, showing the feasibility of 100G overlaying existing 10G/40G com...