Combined Application of Broadband and Ultra-Narrowband Discrete Frequency Packets Fundamentals for Creating Compact Microwave Photonic Analyzers of Broadband Amplitude Mach-Zehnder Modulators and Photodetectors Spectral Characteristics. Part III. Microwave Photonic Analyzer of Spectral Characteristics for Wideband Photodetectors Based on Dual-Band Multi-Frequency Probing Radiation Obtained by Frequency Multiplication - PDF (Russian)