Gain- and noise-figure improvement of a reflective L-band EDFA by using a short length of preamplification EDF
✍ Scribed by Hao Zhang; Qingying Dou; Yao Li; Ling Yu; Yange Liu; Lihui Liu; Shuzhong Yuan; Xiaoyi Dong
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 79 KB
- Volume
- 45
- Category
- Article
- ISSN
- 0895-2477
No coin nor oath required. For personal study only.
✦ Synopsis
The advantage of the SA techniques is the ability to provide variations to the CLS method for differing sidelobe topographies. The edge brightening that appeared in the amplitude distributions obtained using the SA approach can be reduced by adding a corresponding term in the cost function of Eq. ( 3), thus penalizing that behavior. Nevertheless, this is of concern with regard to the implementation of other kinds of excitation distributions analogous to Taylor's (such as, for example, the one in a work elaborated upon by Rhodes [6]). In that case, the amplitude distributions behave very similarly to those obtained using the CLS implementation, with a central segment and flanking monotonic decaying curves, as was verified by the authors via inspection of some the results not shown here for brevity. As straightforward extensions of the methods, circular continuous sources and -symmetrical arrays are under consideration by some of the authors in a recent paper [7].