Journal ArticleDOI
Polarization effects in short length, single mode fibers
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TLDR
The ability to maintain linearly polarized output in single-mode fibers is essential for utilization of polarization dependent receiver circuitry as mentioned in this paper, and it is shown that these polarization effects are greatly influenced by the presence of physical stress on the fiber such as bending, twisting, mounting, and other variations in ambient conditions.Abstract:
The ability to maintain linearly polarized output in single mode fibers is essential for utilization of polarization dependent receiver circuitry Our measurements with long lengths of fiber (200 m) indicate that we can find input polarization angles which yield essentially linearly polarized output However, we found that these polarization effects are greatly influenced by the presence of physical stress on the fiber such as stress due to bending, twisting, mounting, and other variations in ambient conditions We conducted several experiments on short length fibers where special precautions were adopted to assure repeatability of the measurements Our results indicate the existence of a general theoretical model that predicts the output polarization characteristics as a function of input polarization and fiber length The model assumes the presence of two asynchronous, orthogonal modes, uniformly coupled over the entire fiber length The model, however, cannot distinguish between uniformly coupled and uncoupled mode cases based on the output radiation measurementsread more
Citations
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Journal ArticleDOI
Polarization in optical fibers
TL;DR: In this paper, the nature of random coupling between normal modes of polarization is analyzed and discussed in connection with various applications, such as fibers with very small or very large birefringence for polarization dependent applications.
Journal ArticleDOI
Guided-wave devices for optical communication
TL;DR: In this paper, the current status of guided-wave optical communication devices is reviewed and the operation and presently demonstrated performance characteristics of waveguides switches, modulators, filters and polarization transforming devices are discussed.
Journal ArticleDOI
Polarization effects in fiber Raman and Brillouin lasers
TL;DR: Raman and Brillouin gains in fibers are a factor of 2 higher if linear polarization is maintained as mentioned in this paper.Birefringent single-mode fibers are used to demonstrate this gain difference.
Journal ArticleDOI
Linear polarization in birefringent single‐mode fibers
TL;DR: In this paper, singlemode fibers which maintain linear polarization are described and the fibers are birefringent and linear polarization is maintained along either of the two principal axes of the fibers.
Journal ArticleDOI
Distributed measurement of static strain in an optical fiber with multiple bragg gratings at nominally equal wavelengths.
Mark Froggatt,Jason P. Moore +1 more
TL;DR: A tunable external cavity diode laser along with a reference reflector in anoptical fiber are used to produce a measurement of the phase and amplitude of the reflected light from the modulated Bragg grating as a function of wavelength.
References
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Journal ArticleDOI
Coupled wave theory and waveguide applications
TL;DR: In this article, a theory describing the behavior of two coupled waves is presented, and it is shown that this theory applies to coupled transmission lines, and applications include highly efficient pure-mode transducers in multi-mode systems, and frequency-selective filters.
Journal ArticleDOI
Birefringence in dielectric optical waveguides
F. Kapron,N. Borrelli,D. Keck +2 more
TL;DR: In this article, the linear and circular birefringent properties of low-loss single-mode glass fibers are found to depend upon length, and some anomalous behavior can be explained in terms of properties varying locally along the fiber and a resultant upper information rate of over 1012bits/s is estimated.
Journal ArticleDOI
Performance limitations imposed on optical waveguide switches and modulators by polarization
TL;DR: Conditions on device design are found that minimize the polarization sensitivity of switches/modulators, making them suitable for use with fiber optic transmission lines.
Journal ArticleDOI
Determination of the ellipticity of monomode glass fibres from measurements of scattered light intensity
W. Eickhoff,O. Krumpholz +1 more
TL;DR: In this article, a non-destructive method is proposed to determine the core ellipticity of a monomode fiber from measurements of the scattered light intensity, which can be used to obtain the intrinsic structure of the fiber.
Journal ArticleDOI
A phased, optical, coupler-pair switch
V. Ramaswamy,R. D. Standley +1 more
TL;DR: It is estimated that the controlling voltage required to activate the bipolar switch is of the order of 1 to 2 V for a 3-µm guide with 3-mm-long electrodes in Ti-diffused LiNbO3.