New Estimation Method of Millimeter‐Wave Power by Dealing Optical Power

Abstract

This report is regarding to a new measurement of a millimeter-wave using optical power. A calorie meter conventionally has been used to measure the millimeterwave power above 100 GHz, which has high temperature dependence, and therefore finds the difficulty of small power measurement. To overcome this difficulty, we propose the new method to estimate millimeter-wave power by measuring optical power of optical 2-tone signals. This proposed method has low temperature dependence due to optical power, and therefore makes the small power of the above millimeter-wave enable. The principle and the estimation methods of this new method, and its experimental methods and results are explained. Noble results show that the difference between estimated and experiment value is maximally 0.99 dB at 110 GHz, the measurement possibility of frequency extending more than 170 GHz is referred to. C⃝ 2016 Wiley Periodicals, Inc. Electr Eng Jpn, 196(4): 3-10, 2016; Published online in Wiley Online Library (wileyonlinelibrary.com).