Measurement of backscatter factor in single-mode fibres
نویسندگان
چکیده
منابع مشابه
Backscattering Measurement of Bending - Induced Birefringence in Single Mode Fibres
core were investigated. It was shown from the measurement that the beat length was about L = 23 mm (birefringence B = 5 x 10") and the state of linear polarisation of the incident light beam was maintained up to 0-6 kg/cm of the concentrated force when the incident plane of polarisation was coincident with the major axis of the fibre. It was also shown that the degree and the plane of polarisat...
متن کاملPolarization mode coupling in long single-mode fibres
In this paper we look at the polarization state evolution of light propagating in long, birefringent, singlemode fibres in the presence of mode coupling. We show first that there always exist two orthogonal linear input polarizations which lead to linear output polarization for monochromatic light. The applicability of the coupled power equations is discussed and it is shown that they cannot be...
متن کاملMeasurement of birefringence correlation length in long, single-mode fibers.
Measurements of birefringence correlation length performed on long single-mode telecommunication fibers are reported. The proposed technique relies on the statistical properties of the backscattered-field polarization, which was measured by means of a polarization-sensitive optical time-domain reflectometer. Experimental results are reported that show good agreement with the underlying theory b...
متن کاملDynamic operation of optical fibres beyond the single-mode regime facilitates the orientation of biological cells
The classical purpose of optical fibres is delivery of either optical power, as for welding, or temporal information, as for telecommunication. Maximum performance in both cases is provided by the use of single-mode optical fibres. However, transmitting spatial information, which necessitates higher-order modes, is difficult because their dispersion relation leads to dephasing and a deteriorati...
متن کاملSimple Method for Polarization Dispersion Measurements in Long Single-Mode Fibres
The study of polarization dispersion in standard single-mode fibres takes on a growing importance, because the delay between polarization modes causes pulse broadening and may become predominant in multigigabit long-span optical links. The combined effects of weak birefringence and fluctuating mode coupling result in a stochastic behaviour of the polarization dispersion and of the output polari...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Electronics Letters
سال: 1981
ISSN: 0013-5194
DOI: 10.1049/el:19810674