| Autor: |
Venkat Veerasubramanian, Guillaume Beaudin, Alexandre Giguere, Boris Le Drogoff, Vincent Aimez, Andrew G. Kirk |
| Jazyk: |
angličtina |
| Rok vydání: |
2012 |
| Předmět: |
|
| Zdroj: |
IEEE Photonics Journal, Vol 4, Iss 4, Pp 1133-1139 (2012) |
| Druh dokumentu: |
article |
| ISSN: |
1943-0655 |
| DOI: |
10.1109/JPHOT.2012.2204971 |
| Popis: |
We report on the design, modeling, and characterization of apodized comb filters in the silicon-on-insulator platform. These devices are based on sampled gratings, wherein the comb response is generated by a convolution of a regular grating by a predetermined periodic sampling function. We show that dual and complementary apodization of the etch depth in the marks and spaces ensures a near-zero dc index change over the length of the device and avoids the unwanted sidelobes obtained in a single apodized device. Comb filters with a 40-dB side-mode suppression ratio, a 92-GHz clear bandwidth, 200-GHz channel spacing, and a 120-dB/dec rolloff have been theoretically proposed. An experimental demonstration of the fabricated devices is also presented, and the performance is compared with the numerical simulations. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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