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Methods for averaging signals of multimode fiber interferometers
- Publication Year :
- 2021
- Publisher :
- СанкÑ-ÐеÑеÑбÑÑгÑкий полиÑÐµÑ Ð½Ð¸ÑеÑкий ÑнивеÑÑиÑÐµÑ ÐеÑÑа Ðеликого, 2021.
-
Abstract
- Ð ÑабоÑе ÑаÑÑмоÑÑÐµÐ½Ñ ÑпоÑобÑ, коÑоÑÑе позволÑÑÑ ÑÑÑеднÑÑÑ ÑÐ¸Ð³Ð½Ð°Ð»Ñ Ð¼ÐµÐ¶Ð¼Ð¾Ð´Ð¾Ð²Ð¾Ð³Ð¾ волоконного инÑеÑÑеÑомеÑÑа, а именно ÑÑÑеднение по анÑÐ°Ð¼Ð±Ð»Ñ Ð¸ ÑÑÑеднение по длинной ÑеализаÑии. РкаÑеÑÑве Ñели ÑабоÑÑ Ð²ÑÑÑÑпало полÑÑение ÑÑабилÑного оÑклика, коÑоÑÑй Ð¼Ð¾Ð¶ÐµÑ Ð±ÑÑÑ Ð´Ð¾ÑÑигнÑÑ ÑÑÑеднением Ñигналов волоконного инÑеÑÑеÑомеÑÑа, изменÑÑ Ð´Ð»Ð¸Ð½Ñ Ð¾Ð¿ÑиÑеÑкого ÑвеÑовода. Ð Ñ Ð¾Ð´Ðµ пÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¸Ñ ÑабоÑÑ Ð±Ñли ÑмоделиÑÐ¾Ð²Ð°Ð½Ñ Ð½ÐµÐ¾Ð±Ñ Ð¾Ð´Ð¸Ð¼Ñе Ð´Ð»Ñ Ð¾Ð¿Ð¸ÑÐ°Ð½Ð¸Ñ Ð¿ÑоÑеÑÑов в инÑеÑÑеÑомеÑÑе амплиÑÑднÑе Ñ Ð°ÑакÑеÑиÑÑики, коÑоÑÑе завиÑÑÑ Ð¾Ñ Ð¼Ð½Ð¾Ð³Ð¸Ñ ÑоÑÑавлÑÑÑÐ¸Ñ : ÑиÑла мод, коÑоÑÑе бÑли возбÑÐ¶Ð´ÐµÐ½Ñ Ð² ÑвеÑоводе, Ð´Ð»Ð¸Ð½Ñ Ð¾Ð¿ÑиÑеÑкого волокна, пÑоÑÐ¸Ð»Ñ Ð¿Ð¾ÐºÐ°Ð·Ð°ÑÐµÐ»Ñ Ð¿ÑÐµÐ»Ð¾Ð¼Ð»ÐµÐ½Ð¸Ñ , Ð¸Ð·Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ Ð´Ð»Ð¸Ð½Ñ ÐÐС пÑи внеÑнем воздейÑÑвии на него. ÐÑло показано, ÑÑо иÑполÑзование меÑодов ÑÑÑÐµÐ´Ð½ÐµÐ½Ð¸Ñ Ñигналов, по анÑÐ°Ð¼Ð±Ð»Ñ Ð¸ длинной ÑеализаÑии, позволÑÑÑ Ð´Ð¾Ð±Ð¸ÑÑÑÑ ÑÑабилÑноÑÑи оÑклика, пÑи внеÑнем воздейÑÑвии. РезÑлÑÑаÑÑ, коÑоÑÑе бÑли полÑÑÐµÐ½Ñ Ð² Ñ Ð¾Ð´Ðµ пÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¸Ñ ÑабоÑÑ, позволÑÑÑ Ð´Ð°ÑÑ Ð¾ÑÐµÐ½ÐºÑ ÑвойÑÑвам межмодового инÑеÑÑеÑомеÑÑа.<br />The paper considers methods that allow averaging the signals of an intermode fiber interferometer, namely, ensemble averaging and long implementation averaging. The aim of the work was to obtain a stable response, which can be achieved by averaging the signals of a fiber interferometer, changing the length of the optical fiber. In the course of the work, the amplitude characteristics necessary to describe the processes in the interferometer were modeled, which depend on many components: the number of modes that were excited in the optical fiber, the length of the optical fiber, the profile of the refractive index, the change in the length of the MMF under external influence on it. It has been shown that the use of methods of averaging signals over an ensemble and a long implementation allows to achieve the stability of the response under external influence. The results obtained during the work allow us to evaluate the properties of the intermode interferometer.
- Subjects :
- Ñпекл-каÑÑина
диÑпеÑÑиÑ
inter-mode fiber interferometer (IFI)
root-mean-square-response
interference
mode
ÑÑеднеквадÑаÑиÑнÑй оÑклик
инÑеÑÑеÑенÑиÑ
speckle-pattern
amplitude characteristic
мода
dispersion
межмодовÑй волоконнÑй инÑеÑÑеÑомеÑÑ (ÐÐÐ)
амплиÑÑÐ´Ð½Ð°Ñ Ñ Ð°ÑакÑеÑиÑÑика
Subjects
Details
- Language :
- Russian
- Database :
- OpenAIRE
- Accession number :
- edsair.doi...........eb7315fe50de06c87cbbfdd95d6f4580
- Full Text :
- https://doi.org/10.18720/spbpu/3/2021/vr/vr21-1836