Abstract
Orbital angular momentum of the coherent beam has been intensively studied and promises potential applications in free space optical communication. But the orbital angular momentum of partially coherent beam is not well known. In this communication the coherent-mode representation method is adopted to describe the partially coherent beam and the orbital angular momentum spectrum is introduced for the partially coherent beam. The characteristics of the orbital angular momentum spectrum of partially coherent beam are discussed. To study the influence of the partial coherence on the optical link, the channel capacity is studied, with two kinds of available mode separators included.
| Original language | English |
|---|---|
| Pages (from-to) | 1968-1975 |
| Number of pages | 8 |
| Journal | Optics Communications |
| Volume | 281 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 15 Apr 2008 |
Keywords
- Free space optical communication
- Orbital angular momentum
- Orbital angular momentum spectrum
- Partially coherent beam
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