Hybrid Digital and Analog CATV Fiber Distribution System
Typical mixed analog and digital downstream cable access fiber distribution system using 77 analog and 30 digital 64-QAM channels using DOCSIS standards. 
» Keywords: AM-VSB, 5 Channel QAM Transmitters, Hybrid, ModulatorEA, 64-QAM, DOCSIS
» Available in: Optical System Demos
Digital Baseband Upstream Channel Noise Power Ratio Measurement (NPR)
Implements a noise power ratio (NPR) test for measuring the performance of a digital upstream channel. A sweep plots NPR versus input noise loading. 
» Keywords: Clipping, A/D, D/A, Range, Notch, Digital Return, Noise Power Ratio, NPR
» Available in: Optical System Demos
Impact of Nonlinear Distortions in Radio over Fiber Systems
Demo shows how radio over fiber systems can be affected by intermodulation distortions resulting from the nonlinear nature of the optical link. In this example, a laser is directly modulated by 5 OFDM-QAM radio channels. The Error-Vector-Magnitude of the central radio channel is displayed against the ratio '3rd order spur'/carrier. The carrier, '3 rd order spur'(3rd IMD) and 'spurious free dynamic range' (SFDR) are also measured. 
» Keywords: EVM, Intermodulation, RoF System, Distortion, TwoTone_Analyzer, QAM, Cosimulation, SFDR
» Available in: Optical System Demos
Optical CDMA using Phase Encoding
Possible implementation optical code division multiplexing (OCDMA) based on phase coding. 
» Keywords: OCDMA, Coding
» Available in: Optical System Demos
OCDMA Transmission with 7-Chip SSFBG En/Decoder
Illustrates two-user setup and performance characterization of code-division multiple-access (OCDMA) network using 7-chip optical encoders and decoders based on superstructured fiber Bragg gratings (SSFBG). 
» Keywords: Signal encoding and decoding, FBG, Optical signal processing, Superstructured fiber Bragg grating, CDMA, SSFBG, Code division multiple access
» Available in: Optical System Demos