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Analyzing return loss deterioration of optical fiber joints with various air-filled gaps over wide wavelength range
Fiber characterization Fiber optics
2015/6/5
We experimentally investigated the return loss of optical fiber joints with various air-filled gaps. We discovered that the return loss might deteriorate to 8.6 dB for one connector and 5.9 dB for fou...
Demonstration of Compact Hierarchical Optical Path Cross-Connect Utilizing Wavelength/Waveband Selective Switches
Optical communications Switching circuit
2015/6/5
We demonstrate a compact wavelength/waveband selective switch based hierarchical optical cross-connect (HOXC) system for the first time. Its performance confirms that the HOXC will be applied to creat...
Wavelength-space permutation switch with coherent PDM QPSK transmission for supercomputer optical interconnects
Optical interconnects Coherent communications
2015/6/4
We experimentally study the performance of an economically-viable, high-capacity supercomputer optical interconnect employing wavelength-space optical packet switching,polarization division multiplexe...
Channel Group-Delay- and Polarization-Insensitive Wavelength Conversion of Multichannel Polarization-Shift Keying Signal
Fiber optics communications Nonlinear optics four-wave mixing
2015/6/4
Weexperimentallydemonstrate,simultaneousall-opticalwavelengthconversionformul-tichannelpolarization-shiftkeying(PolSK)signalusingfour-wave-mixinginhighlynon-linearfiber.The proposed multichannel wavel...
4×10 Gb/s Time and Wavelength Multicasting with NRZ to RZ Format Conversion Using Four-Wave Mixing in a Highly Nonlinear Photonic Crystal Fiber
Fiber optics communications Networks multicast
2015/6/4
We demonstrate simultaneous time and wavelength multicasting with NRZ to RZ format conversion by four-wave mixing of the input signal with a time- and wavelength-interleaved laser source. Error-free o...
Optical Wavelength Multicasting Based on Four Wave Mixing in Highly Nonlinear Fiber with Reduced Polarization Sensitivity
Fiber optics communications Networks multicast Nonlinear optics four- wave mixing
2015/6/4
Using three co-polarized probes and a pump modulated signal, seven multicasting channels with 100-GHz spacing are demonstrated. The conversion efficiency fluctuation due to polarization sensitivity is...
Generating 20 GHz and 40 GHz Pulse Trains from a 10 GHz Mode-Locked Laser Using a Tunable Planar Lightwave Circuit and Nonlinear Wavelength Conversion
Integrated optics devices Optical communications
2015/6/4
We demonstrate the generation of 20 GHz and 40 GHz pulse trains using a tunable planar lightwave circuit (PLC) and nonlinear wavelength conversion. The PLC is a 6-stage lattice-form Mach-Zehnder inter...
Method for estimating loss over wide wavelength region of fiber cables installed in access networks
Fiber characterization
2015/6/4
We propose a simple method for estimating the loss of installed cables to expand WDM access networks. Loss at arbitrary wavelengths can be very accurately predicted from the measured loss at a few wav...
Ultra High Performance Media Multicasting Scheme over Wavelength-Routed Networks
Networks multicast Fiber Optics Communications
2015/6/4
This paper presents a demonstration of an all-optical multicasting scheme for ultra high definition media over wavelength-routed networks, using Self-Phase Modulation. The feasibility of using this te...
Network Coding in Optical Networks with O/E/O Based Wavelength Conversion
Networks wavelength routing Networks protection restoration
2015/6/4
Performing network coding at network nodes with O/E/O wavelength conversion equip-ment incurs negligible additional cost. Our methodology finds minimum O/E/O equipment for mul-ticast network coding on...
Inter-Wavelength Transfer of Digital Lightpath Labels Induced by Stimulated Raman Scattering
Fiber optics links and subsystems All-optical networks Fiber optics communications Nonlinear optics fibers
2015/6/4
WDM systems using digital lightpath labels can experience modulation transfer among wavelengths due to stimulated Raman scattering (SRS), creating label replicas. We present pump-probe measurements of...
Single-Wavelength 108 Gb/s Upstream OFDMA-PON Transmission
Single-Wavelength Upstream OFDMA-PON Transmission
2015/7/21
We experimentally demonstrate 108-Gb/s/ upstream OFDMA-PON transmission over 20km SSMF and a 1:32 split, enabled by ONU carrier suppression and OLT heterodyne coherent reception. This is the ...
Record Switching Throughput of 1.28-Tbit/s/port (64-wavelength x 20-Gbit/s) by DWDM / NRZ-DQPSK Optical Packet Switch System
DWDM / NRZ-DQPSK Optical Packet Switch System
2015/7/20
We first achieved error-free (BER<10 -9 ) operation of 1.28-Tbit/s/port (64-wavelengths x 20 Gbit/s)DWDM/NRZ-DQPSK optical packet switching and buffering, and demonstrated throughput-scalability could...
MEMS-based 1x43 Wavelength-Selective Switch with Flat Passband
MEMS-based Wavelength-Selective Switch Flat Passband
2015/7/20
We propose a flat-passband 1x43 wavelength-selective switch by using a combination of anamorphic prism pairs and two-axis MEMS mirrors. The prototype successfully demonstrates a 1x43 switching with a ...
Bandwidth-On-Demand Ultra Dense WDM Access (1.25/2.5 Gb/s × N-ch) Employing Time-Domain Interleaved Wavelength-Swept Transmitter
Ultra Dense WDM Access Time-Domain Interleaved Wavelength-Swept Transmitter
2015/7/20
To realize a flexible WDM signal format, the dynamic control of channel number and data rate is proposed. A total rate of more than 10 Gb/s with ultra-dense spacing (< 10 GHz) is demonstrated experime...