✦ LIBER ✦

Optimization of bends in rectangular waveguide by a finite-element genetic-algorithm procedure

✍ Scribed by R. Coccioli; G. Pelosi; S. Selleri

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 166 KB
Volume: 16
Category: Article
ISSN: 0895-2477
DOI: 10.1002/(sici)1098-2760(19971205)16:5<287::aid-mop6>3.0.co;2-b

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✦ Synopsis

We have reported the characterization of transitions be-Ž . tween the coplanar waveguide CPW inputroutput terminals and the microstrip traveling-wave electrode of polymer electrode-optic modulators. Results of RF loss measurements of the microstrip electrode of each candidate taper were reported along with the before and after of the application of a poling field of 30 Vrm. It is observed that the cosinesquared taper yielded a lower insertion loss of 1.8 dB per transition, and the relative loss difference of poling and unpoling polymer materials is clearly negligible.