Application of 1.55-mu m photonic technology to practical millimeter-wave network analysis

This paper presents a novel full-band optoelectronic system extending the c apabilities of vector network measurements to the millimeter-wave regime bo th in small and large signal analysis. The design of the measurement system is made with an emphasis on its practicability for real-world applications using all 1.55-mu m-wavelength-based photonic technology. We demonstrate t he performance of this network analyzer by measuring the 2-port S-parameter s of a HEMT device. The accuracy of the results is also shown by comparing them with conventional 50-GHz electronic measurements. The transit frequenc y of the active device of over 100 GHz is directly measured for the first t ime to our knowledge.