Title :
Optical millimeter-wave generation or up-conversion using external modulators
Author :
Yu, Jianjun ; Jia, Zhensheng ; Yi, Lilin ; Su, Yikai ; Chang, Gee-Kung ; Wang, Ting
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
We have experimentally compared the performances of optical millimeter-wave generation or up-conversion using external modulators based on different modulation schemes. The generated or up-converted optical millimeter wave using the optical carrier suppression (OCS) modulation scheme shows the highest receiver sensitivity, highest spectral efficiency, and smallest power penalty over long-distance delivery. Moreover, the OCS modulation scheme has a simple configuration and low-frequency bandwidth requirement for both electrical and optical components. Employing an OCS modulation scheme, 16-channel dense wavelength-division multiplexing signals at 2.5-Gb/s per channel have been up-converted to a 40-GHz carrier simultaneously.
Keywords :
microwave photonics; millimetre wave generation; optical fibre communication; optical frequency conversion; optical modulation; optical receivers; wavelength division multiplexing; 2.5 Gbit/s; 40 GHz; 40 Gbit/s; dense wavelength-division multiplexing signals; external modulators; long-distance delivery; low-frequency bandwidth requirement; optical carrier suppression modulation; optical millimeter-wave generation; optical millimeter-wave upconversion; power penalty; radio-over-fiber systems; receiver sensitivity; spectral efficiency; Fiber nonlinear optics; Millimeter wave technology; Nonlinear optics; Optical devices; Optical feedback; Optical filters; Optical modulation; Optical receivers; Optical saturation; Optical sensors; All-optical up-conversion; optical carrier suppression modulation; optical millimeter generation; radio over fiber;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.862006
