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100-km uplink transmission of 10G- and 1G-ONU co-existing TDM-OCDMA-PON system using dual-rate burst-mode receiver
Networks Optical communications
2015/5/22
In a cost-effective TDM-OCDMA-PON system without en/decoder at each ONU, the uplink dispersion-compensation-free 10 Gbps/1 Gbps-co-existing TDM x 4-OCDMA transmission over 100 km SMF is demonstrated b...
1.3 μm all-VCSEL low complexity coherent detection scheme for high bit rate and high splitting ratio PONs
Fiber optics communications Vertical cavity surface emitting lasers Coherent
2015/5/21
Full 1.3 μm VCSEL-based simplified coherent detection receiver is demonstrated at 5 Gbps. Receiver sensitivity of -34 dBm is achieved providing link reach and splitting ratio extension for future pass...
Ultra-High Data-Rate 60 GHz Radio-over-Fiber Systems Employing Optical Frequency Multiplication and Adaptive OFDM Formats
Optical Communications Modulation
2015/5/21
This paper reviews 60-GHz radio-over-fiber systems employing optical frequency multiplication and adaptive OFDM signals with multi-level modulation formats to achieve an ultra-high data rate of up to ...
Oxide-Relief Vertical-Cavity Surface-Emitting Lasers with Extremely High Data-Rate/Power-Dissipation Ratios
Oxide-Relief Vertical-Cavity Surface-Emitting Lasers Extremely High Data-Rate/Power-Dissipation Ratios
2015/5/21
By using oxide-relief technique, a high modulation-efficiency (9.8GHz/mA 1/2 ) and a high modulation-speed (34 Gbps) with a record-high data-rate/power-dissipation ratios (2.9 (9.2) Gbps/mW at 34 (12....
Impairment-aware PCE in multi bit-rate 10-100 Gb/s WSON with experimental demonstration
Impairment-aware PC 10-100 Gb/s WSON experimental demonstration
2015/5/21
Two impairment-aware PCE architectures suitable for multi bit-rate WSONs are presented. Experimental demonstration is provided on a real testbed including detrimental XPM effects among 10Gb/s OOK and ...
Bit-error Rate Performance of Nyquist Wavelength-Division Multiplexed Quadrature Phase-Shift Keying Optical Signals
Coherent communications Multiplexing Optical communications
2015/5/20
We measure bit-error rates of polarization-multiplexed Nyquist-WDM QPSK signals,which have rectangular spectral shapes and channel spacing equal to the symbol rate. The spectral efficiency of 4 bit/s/...
A Broadband, Spectrally Flat, High Rep-rate Frequency Comb: Bandwidth Scaling and Flatness Enhancement of Phase Modulated CW through Cascaded Four-Wave Mixing
Broadband Spectrally Flat High Rep-rate Frequency Comb Bandwidth Scaling Flatness Enhancement Phase Modulated CW Cascaded Four-Wave Mixing
2015/5/20
We demonstrate a scheme to scale the bandwidth by several times while enhancing spectral flatness of frequency combs generated by intensity and phase modulation of CW lasers using cascaded four-wave m...
Efficient Shared Subconnection Protection in Mixed-Line-Rate Optical WDM Networks
Efficient Shared Subconnection Protection Mixed-Line-Rate Optica WDM Networks
2015/5/20
Employing Mixed Line Rates (MLR) in optical WDM networks enables new paradigms for protection. We propose to design transparent MLR networks with shared subconnection protection and achieve significan...
Bandwidth Measurement of Multimode Fibers through System Level Bit Error Rate Testing
Bandwidth Measurement Multimode Fibers Bit Error Rate Testing
2015/5/18
A new bandwidth measurement method for multimode fibers is developed through measuring bit error rate and power penalty associated with the testing system. Experimental calibration procedure and actua...
Characterization of strongly spun fibers with spin rate exceeding OFDR spatial resolution
spun fibers spin rate xceeding OFDR spatial resolution
2015/5/18
We describe an OFDR-based procedure to measure the spin of optical fibers with spin rates exceeding OFDR resolution. Fibers are twisted to locally unwind the spin and measurements are afterward reasse...
Digital multi-rate receiver for 10GE-PON and GE-PON coexistence
GE-PON multi-rate receiver
2015/5/18
We demonstrate an NRZ multi-rate digital receiver capable of receiving upstream TDM traffic line-rates from GE-PON to 10GE-PON, that utilizes a simple optical front end and polyphase DSP at 2 samples ...
Equalization and Pre-distorted Schemes for Increasing Data Rate in In-door Visible Light Communication System
Equalization Pre-distorted Increasing Data Rate Visible Light Communication System
2015/5/18
We propose and demonstrate using signal pre-distortion and equalization schemes for increasing the data rate of the white-light LED communication system. Bit-error-rate of <10 -10 at 10-Mb/s operation...
Delay-Asymmetric Nonlinear Loop Mirror for Bit-Rate Variable RZ-to-NRZ Format Conversion
Delay-Asymmetric Nonlinear Loop Mirror it-Rate Variable RZ-to-NRZ Format Conversion
2015/5/15
We demonstrate RZ-to-NRZ pulse format conversion at tunable bit-rates using a delay-asymmetric nonlinear loop mirror. The input RZ-OOK signals are converted to NRZ-OOK signals with a power penalty les...
Multi Data-Rate Synchronization of 40 GHz Mode-Locked Quantum-Dash Lasers Diodes
Mode-Locked Lasers Diodes Quantum-Dash Multi Data-Rate Synchronization
2015/5/15
Beat-tones at 40-GHz from a QDash-ML laser under 10 to 160 Gb/s optical injection are analyzed. A FWHM linewidth less than 8 Hz is obtained regardless of the rate of injected data stream.
Experimental Study of the Effects of Environmental and Fog Condensation Nuclei Parameters on the Rate of Fog Formation and Dissipation Using a New Laboratory Scale Fog Generation Facility
Fog Condensation Visibility Hygroscopic Droplet growth
2016/3/28
The IIT Kanpur Fog Chamber Facility has been conceptualized and built indigenously to study the fog formation and
dissipation under various environmental conditions. The chamber has been designed suc...