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Attaching single-mode polarization-preserving fiber to single-mode semiconductor lasers
Applied Optics, 1984The coupling of a semiconductor laser as a coherent well-polarized source to birefringent polarization-maintaining fiber is an important step in exploiting the unique characteristics of this waveguiding medium. The total light output of most semiconductor lasers is relatively poorly polarized yielding extinction ratios of the order of 10–12 dB. We wish
R O, Miles, A, Ceruzzi, M J, Marrone
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Single-mode fiber measurements
IEEE Transactions on Instrumentation and Measurement, 1986In this invited tutorial review paper on single-mode fiber measurements, I discuss the various methods used to characterize the following important transmission parameters of single-mode fibers: attenuation, cut-off wavelength, mode-field diameter and chromatic dispersion.
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Physical Review B, 1996
We calculate the self-consistent electronic structure of GaAs-${\mathrm{Al}}_{\mathit{x}}$${\mathrm{Ga}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$As split-gate quantum wires taking into account the ordering in the donor layer which occurs when the ionization fraction F is less than unity. Ordered ion distributions are generated via a Monte Carlo simulation
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We calculate the self-consistent electronic structure of GaAs-${\mathrm{Al}}_{\mathit{x}}$${\mathrm{Ga}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$As split-gate quantum wires taking into account the ordering in the donor layer which occurs when the ionization fraction F is less than unity. Ordered ion distributions are generated via a Monte Carlo simulation
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Couplings between Single-Mode Lasers and Single-Mode Fibers
1983This 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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2012
The only active transverse mode in a truly single-mode VCSEL is the fundamental mode with a near Gaussian field distribution. A single-mode VCSEL produces a light beam of higher spectral purity, higher degree of coherence and lower divergence than a multimode VCSEL and the beam can be more precisely shaped and focused to a smaller spot.
Anders Larsson, Johan S. Gustavsson
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The only active transverse mode in a truly single-mode VCSEL is the fundamental mode with a near Gaussian field distribution. A single-mode VCSEL produces a light beam of higher spectral purity, higher degree of coherence and lower divergence than a multimode VCSEL and the beam can be more precisely shaped and focused to a smaller spot.
Anders Larsson, Johan S. Gustavsson
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Single Mode Fiber Optic Components
IEEE Journal of Quantum Electronics, 1981In the process of studying single-mode fiber optic systems it became rapidly apparent a few years ago that it would be desirable to perform a number of functions with in-line components, which would allow for signal processing without the removal of the optical signal from the fiber.
R. Bergh +4 more
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Single-mode unidirectional microcavity laser
Optics Letters, 2017In this Letter, we report a suspended whispering gallery mode microdisk with a hole pierced through its surface. The novel disk is made up of Rhodamine B-doped resin, which is fabricated by femtosecond laser direct writing technology. The pierced microcavity achieves highly directional emission of single-mode lasing with a far field divergence angle of
Zhen-Nan, Tian +5 more
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Single-mode surface plasmon laser
Conference on Lasers and Electro-Optics (CLEO 2000). Technical Digest. Postconference Edition. TOPS Vol.39 (IEEE Cat. No.00CH37088), 2000Surface-plasmon modes confined at the interface between a metal and a semiconductor are exploited in place of conventional dielectric waveguides for the realization of a λ∼17 μm semiconductor laser. The device is based on the quantum cascade concept and outperforms with its 38 mW of peak output power and 240 K of maximum operating temperature any ...
Tredicucci A +5 more
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Single-Nanowire Single-Mode Laser
Nano Letters, 2011We demonstrate single-mode laser emission in single nanowires. By folding a 200 nm diameter CdSe nanowire to form loop mirrors, single-mode laser emission around 738 nm wavelength is obtained with line width of 0.12 nm and low threshold. The mode selection is realized by the vernier effect of coupled cavities in the folded nanowire.
Yao, Xiao +8 more
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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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