公开(公告)号：US07412166B2

公开(公告)日：2008-08-12

申请号：US10426911

申请日：2003-04-30

申请人： Martin Piotte ,  Georges Désilets

发明人： Martin Piotte ,  Georges Désilets

IPC分类号： H04B10/08

CPC分类号： H04B10/00 ,  H04B2210/075

摘要： A method of optical communication includes providing a plurality of optical signals each associated with a distinct channel of a composite optical signal. A unique pilot tone signature is superimposed on each channel. The spectral composition of each signature includes a plurality of frequencies. In one embodiment, binary frequency shift keying at a frequency fm is used to shift between instantaneous frequencies f1 and f2 wherein f2+Δf=f1−Δf=fc. Choosing Δ ⁢ ⁢ f f m ≈ 1.1602 produces a spectrum having a plurality of dominant components at least some of which have substantially the same amplitude. A method of detecting the presence of a selected pilot tone signature having a plurality n of dominant spectral components F1 . . . Fn includes generating a power spectrum P0(f). Sk(f) is calculated as a product of a plurality of frequency shifted versions of P0(f), where k∈{1 . . . n}. The existence of a dominant spectral component at Fk indicates the presence of the selected pilot tone signature.

摘要翻译： 光通信的方法包括提供多个光信号，每个光信号与复合光信号的不同信道相关联。 独特的导频音签名叠加在每个频道上。 每个签名的频谱组成包括多个频率。 在一个实施例中，使用频率f m2的二进制频移键控在瞬时频率f 1和f 2之间移动，其中f _{2 + Deltaf = f＆lt; 1＆gt; -Deltaf = f＆lt; c＆gt; 选择}