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This paper presents an optically controlled broadband phase-shifter using a parallel-line coupler, that takes advantage of high-resistivity silicon photo-absorption at 840 nm. A continuously variable phase-shifting of 120° is achieved at 11 GHz with Δ|S21| < 5 dB and with |S11| < -15 dB in a large frequency band (6–15 GHz). © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 47: 570–573, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21232 [ABSTRACT FROM AUTHOR]

The optically controlled phase and magnitude of a coplanar transmitted wave have been investigated, taking advantage of the benefit of silicon photo-absorption at 843 nm. A phase-shift of 45° has been achieved at 12 GHz while the magnitude remains constant. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 38: 129–132, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10993 [ABSTRACT FROM AUTHOR]

A metallic microstrip line deposited on silicon, illuminated at its end while its entry is being connected to an ultra-high-frequency generator, presents a photoinduced load at its extremity. By performing a mixing frequency experiment, it has been proved that this load actually behaves as a nonlinear element. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 29: 309–312, 2001. [ABSTRACT FROM AUTHOR]

We have shown that, if a microstrip line deposited on silicon is illuminated at its end, a nonlinear load is obtained which behaves in microwave like a “photoinduced varactor.” We have obtained this result experimentally, and by solving the Poisson's equation and the two carrier continuity equations. © 2000 John Wiley & Sons, Inc. Microwave Opt Technol Lett 26: 10–13, 2000. [ABSTRACT FROM AUTHOR]

An optically controlled coplanar waveguide gap on silicon has been investigated as a phase shifter. A large phase shift varying between 49 and 76° in the 1.4–12 GHz band is obtained under very low optical power (5 mW). © 1998 John Wiley & Sons, Inc. Microwave Opt Technol Lett 18: 56–58, 1998. [ABSTRACT FROM AUTHOR]