| Автор | J Knuhtsen |
| Автор | E Olldag |
| Автор | P Buchhave |
| Дата выпуска | 1982-11-01 |
| dc.description | A fibre-optic laser Doppler anemometer (LDA) utilising a single-mode polarisation-preserving fibre as a (transmitting) link is discussed. Since these fibres are bimodal in the sense that they can sustain two modes with orthogonal polarisations, they can be used to transmit the two beams of a normal LDA in which one beam is frequency shifted. By rotating the polarisation of one beam 90 degrees before coupling it to the fibre, the two beams propagate independently through the fibre and can be separated again at the fibre exit. The performance of this type of fibre in a laser Doppler set-up is investigated and experimental results are given. A miniature optical measuring head using this principle and operating in backscatter is described. The backscattered light is collected by a conventional multi-mode fibre. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Fibre-optic laser Doppler anemometer with Bragg frequency shift utilising polarisation-preserving single-mode fibre |
| Тип | paper |
| DOI | 10.1088/0022-3735/15/11/015 |
| Print ISSN | 0022-3735 |
| Журнал | Journal of Physics E: Scientific Instruments |
| Том | 15 |
| Первая страница | 1188 |
| Последняя страница | 1191 |
| Аффилиация | J Knuhtsen; DISA Elektronik A/S, Skovlunde, Denmark |
| Аффилиация | E Olldag; DISA Elektronik A/S, Skovlunde, Denmark |
| Аффилиация | P Buchhave; DISA Elektronik A/S, Skovlunde, Denmark |
| Выпуск | 11 |
