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Compensation of Cross-gain Modulation in Filtered Multi-channel Optical Signal Processing Applications
Fiber optics communications Phase modulation Radio frequency photonics
2010/6/10
We experimentally demonstrate compensation of nonlinearity due to cross-gain modulation in wideband analog systems employing narrow-band optical filtering, which is essential for multi-channel optical...
Improvement of Chromatic Dispersion and Differential Group Delay Tolerance of Incoherent Multilevel Signaling with Receiver-side Digital Signal Processing
Fiber optics communications Modulation
2010/6/10
Chromatic dispersion and differential group delay tolerance of 30-Gbit/s 8DPSK and 8QAM signaling is investigated experimentally, and we show 1.7 and 1.25 times enhancement of them in 8QAM signaling b...
M-PSK Versatile Modulation using a Single-electrode Straight-line Phase Modulator and Digital Signal Processing for ISI-suppression
Coherent communications Fiber optics communications
2010/6/5
BPSK, QPSK, and 8-PSK modulation/demodulation was experimentally demonstrated using only a single-electrode straight-line phase modulator for the first time. ISI caused by the modulation was compensat...
Real-time Gigabit Ethernet Transmission over up to 25 m Step-Index Polymer Optical Fibre using LEDs and FPGA-Based Signal Processing
Gigabit Ethernet Transmission Step-Index Polymer Optical Fibre LED FPGA-Based Signal Processing
2009/7/15
Real-time Gigabit Ethernet transmission over up to 25 m Step-Index Polymer Optical Fibre is demonstrated using a commercial LED. This is enabled by use of PAM-4 modulation and receiver equalisation in...
Synchronized generation of microwave DC-free sinusoids from a free- running pulsed laser for electro-optic signal processing
microwave DC-free sinusoids free- running pulsed laser electro-optic signal processing
2008/8/4
We demonstrate fiber-based generation of optically reconfigurable DC-free microwave wave-packets precisely synchronized with a free-running pulsed laser. This technique is particularly interesting for...
High-speed digital signal processing for optical communications
High-speed digital signal processing optical communications
2008/7/30
Today’s electronic processing capability means that it is now possible to perform extensive signal processing at the highest commercial data rates. In this tutorial we discuss the design and technolog...