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Passive single-mode fiber depolarizer
Applied Optics, 1999We analyze and demonstrate a passive single-mode fiber depolarizer by using cascaded 2 x 2 couplers, recirculating delay lines, and a commercial laser diode. Design criteria and principles are discussed. We reduced the degree of polarization (DOP) to less than 20 dB by using ten cascaded couplers. The DOP can be reduced even further with more couplers.
P, Shen, J C, Palais
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Single-mode optical fiber cable
Applied Optics, 1979A single-mode optical fiber cable was manufactured; loss increase characteristics due to cabling were evaluated. The existence of wide V-value regions without cabling loss increases is shown by a suitable selection of fiber parameters and optical wavelengths.
Y, Katsuyama +3 more
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Pulse distortion in single-mode fibers
Applied Optics, 1980A theory is presented of the propagation of Gaussian pulses in single-mode optical fibers by expanding the propagation constant in a Taylor series that includes the third derivative with respect to frequency. The light source is assumed to have a Gaussian spectral distribution whose width relative to the width of the Gaussian signal pulse is arbitrary.
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Single-mode optical fiber goniometer
Optics Letters, 1992A two-element single-mode optical fiber goniometer that uses graded-index microlens receivers is presented that measures the angular orientation of a remote laser. The goniometer exhibits a sensitivity of 1.0 V/mrad and a calculated shot-noise-limited angular resolution of 1.0 nrad/ radicalHz.
M D, Mermelstein, J A, Blodgett
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Modal noise in single-mode fibers
Optics Letters, 1981So-called single-mode fibers are generally bimodal in that they can propagate two modes with orthogonal polarizations. If both transverse offset and angular misalignment are present in a single-mode fiber connector, the loss will be mode dependent. Physical distortions of the fiber before a connector cause modal noise.
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Single-Mode Fiber Optical Sensors
1987Single-mode optical fibers can be used to carry coherent light in any kind of interferometric arrangement. External action on the fiber may change the phase of the light propagating through the fiber. Fiber optical sensors employ this type of interferometry, together with sophisticated opto-electronic detection, to measure different kinds of physical ...
Dändliker, R., Bertholds, A.
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Single-mode polymer optical fibers
2014 16th International Conference on Transparent Optical Networks (ICTON), 2014The mechanical properties of polymer optical fibers (POF) make them very interesting candidates for fiber optical sensors. Today POFs are mainly used for short range data communication. These fibers have a very large core of 980 μm. This large core is beneficial for handling and maintenance in fiber networks.
Reinhard Caspary +7 more
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Issues in single-mode fiber standardization
Fiber and Integrated Optics, 1984Abstract A review is given of the main organizations responsible for optical fiber standards activities, followed by a general discussion of specifiable characteristics of single-mode fibers and test methods for measuring them. The parameters and methods are then discussed in detail, with areas of disagreement among standards groups pointed out and ...
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Single-mode-fiber saturable absorber
Optics Letters, 1984Saturable absorption is performed on a signal in a single-mode fiber by allowing the evanescent field of the guided wave to interact with a saturable-absorbing dye. The evanescent field is exposed by mechanically removing a portion of the fiber cladding. The saturable material is then placed in close proximity to the fiber core.
W V, Sorin +3 more
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Single mode optical fiber sensors
1995Single mode fibers are used for sensing when extreme sensitivity is required or when a well defined polarization of light is needed at a remote sensing point. Most sensors which use single mode fibers are of the intrinsic type (i.e. the action of the measurand on the light occurs within the fiber itself). The sensitivity advantage of single mode fibers
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