Radio oscillating and radar systems
a radar system and radio oscillating technology, applied in the field of radio oscillating and radar systems, can solve the problems of high cost of oscillation, and achieve the effects of low cost, efficient oscillation sideband wave, and high-performance optical amplifier
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[0147]The radar system was produced using an optical modulator 2 shown in FIG. 20.
[0148]Specifically, Ti-diffusion waveguides 5A, 5B and CPW electrodes 4A, 4B and 4C were formed on a substrate of x-cut lithium niobate. As to the electrode structure, the gaps “G” between the central electrode 4B and ground electrodes 4A 4C were 20 μm, the electrode thickness was 20 μm, and the electrode length was 40 mm. The modulator substrate was adhered to a dummy plate fixed onto a surface plate with a thermoplastic resin, so that the electrode face is oriented downwardly. The substrate was then subjected to horizontal polishing and polishing to a thickness of 6 μm. A plate-shaped reinforcing body 31 of x-cut lithium niobate was adhered to the modulator substrate. The body was subjected to optical polishing at the end face of the optical waveguide and cut into chips. An adhesive having a specific dielectric constant of 4 was used as the adhesive for the fixation and the thickness of the adhesive ...
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