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WDM up-conversion employing frequency quadrupling in optical modulator
optical modulator simultaneous WDM millimeter-wave
2011/11/17
Optical millimeter-wave generation and up-conversion are essential to Radio-over-Fiber (RoF) communication systems [1-7]. With the rapidly increasing bandwidth requirements for next generation multime...
Novel Flexible-Format Optical Modulator with Selectable Combinations of Carrier Numbers and Modulation Levels Based on Silica-PLC and LiNbO 3 Hybrid Integration
Electro-optical Devices Waveguide Modulators Integrated optics devices
2015/5/26
We devised a novel flexible-format optical modulator that can optically select optimum sets of carrier numbers and modulation levels according to transmission conditions. The modulator with PLC-LN hyb...
Multilevel Optical Modulator with PLC and LiNbO 3 Hybrid Integrated Circuit
Electro-optical devices Waveguide modulators
2015/5/26
Optical modulators with a hybrid configuration of silica-PLCs and LiNbO 3 phase modulators are promising for advanced multilevel modulation formats. Modulators for OFDM-QPSK, 64QAM, and a selectable f...
25 GHz Operation of Silicon Optical Modulator with Projection MOS Structure
Waveguide modulators Modulation Waveguides
2015/6/5
We report a high-speed and compact silicon optical modulator based on the free carrier plasma dispersion in a silicon rib waveguide with a MOS (metal-oxide-semiconductor) junction structure.To achieve...
Compact LiNbO 3 Optical Modulator for Polarization-division-multiplexing RZ-DQPSK
Compact LiNbO 3 Optical Modulator Polarization-division-multiplexing RZ-DQPSK
2015/7/14
An integrated PDM-RZ-DQPSK modulator was developed for the first time with a small bend radius and low-loss, low-crosstalk intersecting U-turn waveguides. This design enables low PDL of less than 0.3 ...