Title :
A low-loss downconverting analog fiber-optic link
Author :
Gopalakrishnan, G.K. ; Moeller, R.P. ; Howerton, M.M. ; Burns, W.K. ; Williams, K.J. ; Esman, R.D.
Author_Institution :
Maryland Adv. Dev. Lab., Greenbelt, MD, USA
fDate :
9/1/1995 12:00:00 AM
Abstract :
An analog fiber-optic link for concurrent detection and downconversion of microwave signals is reported. Optical amplification is employed in conjunction with electrical power combining of photodetectors to demonstrate link losses of 19.6 and 22.9 dB at RF carrier frequencies of 9 and 16 GHz, respectively. Analytic expressions validating the experimental observations are also developed. The link may be employed to detect phase sensitive or phase-modulated microwave signals and shows excellent potential for application in sensor systems involving remoting of an antenna element
Keywords :
optical fibre communication; optical fibre losses; optical signal detection; photodetectors; 19.6 to 22.9 dB; 9 to 16 GHz; RF carrier frequencies; analog fiber-optic link; antenna element remoting; electrical power combining; link losses; low-loss downconverting; microwave signal detection; microwave signal downconversion; optical amplification; phase sensitive microwave signals; phase-modulated microwave signals; photodetectors; sensor systems; Fiber nonlinear optics; High speed optical techniques; Nonlinear optics; Optical mixing; Optical modulation; Optical pumping; Optical receivers; Optical saturation; Optical sensors; Radio frequency;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
