Dispersion-induced Power Penalty In Fiber Bragg Grating-Based DWDM Network Elements
| Autor: | Ming-Hong Huang, 黃名宏 |
|---|---|
| Rok vydání: | 2001 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 89 Optical add/drop multiplexer (OADM) and optical wavelength cross-connect (WXC) are two key components to enable greater connectivity and flexibility in dense wavelength division multiplexing (DWDM) networks. Fiber Bragg grating (FBG) based components have several inherent advantages such as compact, low-insertion loss, high reflectivity, no-linearity effect, polarization insensitivity and wavelength tunability. We experimentally investigate the system power penalty induced by the chromatic dispersion of the FBG as a function of the wavelength detuning of the reflection spectrum for 10 Gb/s signals, which was reflected by cascade of FBGs. Such power penalty limits the number of cascaded gratings and restricts the allowable range of wavelength detuning. In our experiments, we have used several FBG filters with 3-dB bandwidth of 0.43 nm. According to the experimental results, power penalty increases from the central wavelength to the edge wavelength of the reflection spectrum. There are 0.4 dB and 7 dB power penalty for one single FBG and ten cascaded-FBG filter, respectively, when the central wavelength was detuned to ±0.2 nm and –0.1/+0.14 nm. This study result may give a design guideline of fiber grating-based optical add-drop multiplexers or optical wavelength cross-connects in DWDM nodes. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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