Title :
Code-selective RF photonic mixing for use in optical CDMA demultiplexers
Author :
Narasimha, Adithyaram ; Yablonovitch, Eli
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
We demonstrate a technique that coherently frequency shifts a direct sequence encoded optical channel by mixing it with an identically encoded RF local oscillator in a dual-electrode Mach Zehnder modulator (DE-MZM). The spectral separation would reduce the effects of cumulative shot noise and speckle, and full code orthogonality is possible since the bipolar nature of the optical field is recognized by the frequency shifting process
Keywords :
code division multiple access; demultiplexing equipment; electro-optical modulation; electrodes; encoding; microwave photonics; optical communication equipment; shot noise; speckle; telecommunication channels; code-selective RF photonic mixing; coherently frequency shifts; cumulative shot noise; direct sequence encoded optical channel; dual-electrode Mach Zehnder modulator; frequency shifting process; full code orthogonality; identically encoded RF local oscillator; optical CDMA demultiplexers; optical field; speckle; spectral separation; Adaptive optics; Delay; Multiaccess communication; Optical devices; Optical fiber networks; Optical mixing; Optical modulation; Optical noise; Radio frequency; Spectral analysis;
Conference_Titel :
Lasers and Electro-Optics Society, 2001. LEOS 2001. The 14th Annual Meeting of the IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-7105-4
DOI :
10.1109/LEOS.2001.969272
