Accession Number : ADA561677


Title :   Linear, Low Noise Microwave Photonic Systems using Phase and Frequency Modulation


Descriptive Note : Technical rept.


Corporate Author : CALIFORNIA UNIV BERKELEY DEPT OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE


Personal Author(s) : Wyrwas, John


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a561677.pdf


Report Date : 11 May 2012


Pagination or Media Count : 112


Abstract : Photonic systems that transmit and process microwave-frequency analog signals have traditionally been encumbered by relatively large signal distortion and noise. Optical phase modulation (PM) and frequency modulation (FM) are promising techniques that can improve system performance. In this dissertation, I discuss an optical filtering approach to demodulation of PM and FM signals, which does not rely on high frequency electronics, and which scales in linearity with increasing photonic integration. I present an analytical model, lter designs and simulations, and experimental results using planar lightwave circuit (PLC) lters and FM distributed Bragg re ec- tor (DBR) lasers. The linearity of the PM and FM photonic links exceed that of the current state-of-the-art.


Descriptors :   *FREQUENCY MODULATION , *LOW NOISE , *PHASE MODULATION , ANALOG SIGNALS , CIRCUITS , DISTORTION , ELECTRONICS , HIGH FREQUENCY , LASERS , MICROWAVE FREQUENCY , OPTICAL FILTERS , PERFORMANCE(ENGINEERING)


Subject Categories : Radiofrequency Wave Propagation
      Radio Communications


Distribution Statement : APPROVED FOR PUBLIC RELEASE