Results 251 to 260 of about 8,195,647 (300)

Polarization mode dispersion in single-mode fibers

Optics Letters, 1978
In real single-mode optical fibers, imperfections cause the two possible polarizations to propagate at different phase velocities. This birefringence leads to different group velocities. We have measured the resulting mode dispersion in short fiber lengths (0.5-2.5 m) from the depolarization of broad-bandwidth light. In a typical fiber we found 30 psec/
S C, Rashleigh, R, Ulrich
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Single-mode fiber coupler

Applied Optics, 1981
This paper describes the fabrication process and coupling principle of a single-mode fiber coupler. Precise etching properties of the fibers used are presented. Fiber etching is shown to result in smooth surfaces. Coupling is seen to vary with the refractive index of the material separating the fiber cores.
F J, Liao, J T, Boyd
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Single-mode optical waveguides

Applied Optics, 1979
An efficient and powerful technique has been developed to treat the problem of wave propagation along arbitrarily shaped single-mode dielectric waveguides with inhomogeneous index variations in the cross-sectional plane. This technique is based on a modified finite-element method.
C, Yeh, K, Ha, S B, Dong, W P, Brown
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Investigation on Single-Mode-Multimode-Single-Mode Fiber Structure

2011 Symposium on Photonics and Optoelectronics (SOPO), 2011
The multimode interference (MMI) theory and corresponding re-imaging phenomena occurring in a single - mode-multimode-single-mode (SMS) fiber structure is investigated. And the commercially available beam propagation method (BPM) have been adapted and analyzed to model the light propagation in this structure.
Yu Zhao, Yongxing Jin, Houhui Liang
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Single-mode lasing by selective mode pairing

Science, 2019
High-order laser modes are suppressed by pairing them with lossy “superpartners”
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Expanded single mode fiber

OFC 2001. Optical Fiber Communication Conference and Exhibit. Technical Digest Postconference Edition (IEEE Cat. 01CH37171), 2001
We present a solution to maintain an expanded mode in the extremity of a single mode fiber by using a piece-of multimode step index fiber. With a 25 /spl mu/m spot size, the average connection loss is 0.36 dB (without Fresnel reflection) for a multimode section length inferior to 5 cm.
Chanclou, Philippe, Gravey, Philippe, Thual, Monique   +2 more
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Single-mode fiber components

Proceedings of the IEEE, 1987
A variety of optical components have been made directly from single-mode fibers. These components can be combined to construct in-line all-fiber systems such as fiber gyroscopes, fiber Raman lasers, local area networks, or coherent lightwave systems. This paper reviews the present state of passive and active single-mode fiber components.
Roger H. Stolen, Ramon P. De Paula
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Single-Mode–Multimode–Single-Mode Optical Fiber Sensing Structure With Quasi-Two-Mode Fibers

IEEE Transactions on Instrumentation and Measurement, 2018
This paper reviews some aspects of optical fiber sensors based on a single-mode (SM)-multimode (MM)-SM structure and reports on the realization of temperature sensors in which the MM section is made by a quasi-two mode fiber. Two different realizations are compared that rely on: 1) a bend-insensitive fiber operated in the second optical communication ...
Olivero, Massimo, Vallan, Alberto, Orta, Renato, Perrone, Guido   +3 more
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Couplings between Single-Mode Lasers and Single-Mode Fibers

1983
This Symposium brief reports some preliminary results obtained in our laboratory in single-mode laser and single-mode fiber couplings, with a view to ascertaining a satisfactory coupling technique which possesses simultaneously a higher coupling efficiency and a weaker optical feedback.
Zhu Yan-nian, G. Wenke
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Polarization maintaining Single-mode fibers

Conference on Lasers and Electro-Optics, 1981
Polarization-maintaining single-mode fibers will find application in acoustooptic sensors and fiber gyroscopes. In this study both stress-induced birefringence and elliptical core polarization-maintaining single-mode fibers were developed and evaluated.
F I, Akers, R E, Thompson
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