| Autor: |
H. Takahashi, Yasuyuki Inoue, Manabu Oguma, Tsugumichi Shibata, Takayuki Mizuno, Tsutomu Kitoh |
| Rok vydání: |
2006 |
| Předmět: |
|
| Zdroj: |
Journal of Lightwave Technology. 24:3217-3226 |
| ISSN: |
0733-8724 |
| DOI: |
10.1109/jlt.2006.876342 |
| Popis: |
A theoretical and experimental study of an optical interferometer circuit with a uniform wavelength spacing is presented. The operating principle of the filter and a phase-generating coupler (PGC) that can transform a conventional filter into a uniform-wavelength-spaced optical filter is described. As an example, a transformation method is applied to a conventional Mach-Zehnder interferometer (MZI), and the PGC variables are optimized to obtain an MZI with a constant channel spacing of 20 nm. Furthermore, the designed MZI is fabricated using 1.5%-Delta silica-based planar lightwave circuit technology and a 20-nm-spaced MZI is realized with a wavelength displacement that was less than plusmn1.2% of the wavelength period. The fabrication tolerance of the MZI in relation to the PGC design variables is discussed. It is shown that a certain PGC design can increase the fabrication tolerance |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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