Title :
Efficient microwave frequency conversion using photonic link signal mixing
Author :
Sun, C.K. ; Orazi, R.J. ; Pappert, S.A.
Author_Institution :
Div. of RDT&E, NCCOSC, San Diego, CA, USA
Abstract :
An efficient, high-dynamic range microwave mixer implemented using an analog fiber-optic link with an overdriven optical modulator to produce the local oscillator requirement has been demonstrated and analyzed. This approach is compared with the heterodyned lasers approach to generating the local oscillator requirement and it is shown that increased conversion efficiency and more frequency and phase stable upconverted or downconverted signals are obtainable. Aside from RF link loss, which can be compensated with preamplification, a conversion loss below 5 dB has been demonstrated out to 10 GHz.
Keywords :
antenna accessories; compensation; demodulation; microwave antennas; microwave mixers; optical fibre losses; optical fibre networks; optical frequency conversion; optical modulation; stability; 10 GHz; 5 dB; RF link loss,; analog fiber-optic link; conversion loss; heterodyned lasers; high-dynamic range microwave mixer; increased conversion efficiency; local oscillator requirement; microwave frequency conversion; overdriven optical modulator; phase stable downconverted signals; phase stable upconverted signals; photonic link signal mixing; preamplification; Fiber lasers; Frequency conversion; Laser stability; Local oscillators; Masers; Microwave frequencies; Mixers; Optical mixing; Optical modulation; Signal generators;
Journal_Title :
Photonics Technology Letters, IEEE
