IEEE Journal of Quantum Electronics

Volume 18 Issue 10 • October 1982

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Displaying Results 1 - 25 of 61
  • [Front cover and table of contents]

    Publication Year: 1982, Page(s): 0
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  • 2-bit 1 Gsample/s electrooptic guided-wave analog-to-digital converter

    Publication Year: 1982, Page(s):1411 - 1413
    Cited by:  Papers (16)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (608 KB)

    An electrooptic analog-to-digital converter which uses a pulsed GaAlAs diode laser for sampling, a LiNbO3Ti-indiffused-waveguide interferometric array for conversion, a Si APD, and a special 1 GHz Si integrated circuit for digital processing has been demonstrated at 1 Gsample/s. Individual bit channels of this 2-bit device have been tested by a beat-frequency technique with a 499.2 MHz ... View full abstract»

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  • Foreword to the special issue of optical guided wave technology

    Publication Year: 1982, Page(s):1416 - 1417
    Cited by:  Papers (1)
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  • Infrared optical fibers

    Publication Year: 1982, Page(s):1432 - 1450
    Cited by:  Papers (84)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2332 KB)

    A state of the art review of nonsilica based infrared fibers is presented. Two types of fiber materials have been investigated- crystals and glasses. Crystal fiber work appears to be focused on development of short haul CO2laser power delivering lines at 10.6 μm. The maximum delivering power of the CW CO2laser has reached up to about 100 W by the polycrystalline KRS-5 fi... View full abstract»

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  • Application of the backscattering technique to the determination of parameter fluctuations in multimode optical fibers

    Publication Year: 1982, Page(s):1478 - 1483
    Cited by:  Papers (10)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (649 KB)

    An experimental study of backscattering traces from fibers with random variations of core diameter and numerical aperture has been carried out. The "mode-filtering" technique, which is employed in the measurements, is shown to be a powerful means of separating the parameter fluctuation effects from the actual exponential power decay. The experimental results are then found to be in excellent agree... View full abstract»

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  • Polarization holding in elliptical-core birefringent fibers

    Publication Year: 1982, Page(s):1515 - 1523
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1169 KB)

    Polarization holding in high-birefringence elliptical-core fibers is evaluated for the fiber birefringence spatial frequency range 1.5 cm-1< beta_{i} < 40cm-1, corresponding to beat lengths from 1.6 mm to 4.2 cm. This range of spatial frequencies is spanned by making measurements with a broad-band light source on four fibers with different degrees of birefrin... View full abstract»

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  • A comparison of lightwave, microwave, and coaxial transmission technologies

    Publication Year: 1982, Page(s):1524 - 1536
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1500 KB)

    The relative performance, complexity, and cost for three digital transmission technologies-microwave, coaxial, and lightwaveare compared from the point of view of the lightwave technologist. It is found that lightwave systems are inherently noisier than the others. However, its bandwidth advantage can be exploited through bandwidth expansion techniques to overcome the noise disadvantage. It is fur... View full abstract»

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  • Single-mode fiber-type polarizer

    Publication Year: 1982, Page(s):1569 - 1572
    Cited by:  Papers (18)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (493 KB)

    The simple and novel fabrication technique of the fiber-type polarizer has been demonstrated and the polarization characteristics of the polarizer have been investigated. The polarizer structure consists of the eccentric core and the metal coat on the thin buffer layer whose thickness is controlled by chemical etching. The maximum extinction ratio of 41 dB (polarizer lengthL = 40.8mm) w... View full abstract»

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  • Analysis of fiber interferometer utilizing 3 &#215; 3 fiber coupler

    Publication Year: 1982, Page(s):1601 - 1603
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    An analysis of the properties of the 3 × 3 fiber coupler is made. The analysis reveals that four parameters are required to characterize the power transfer properties of this type of coupler. The performance of a fiber interferometer is analyzed in terms of these four parameters. View full abstract»

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  • 2 &#215; 2 optical waveguide matrix switch using nematic liquid crystal

    Publication Year: 1982, Page(s):1603 - 1610
    Cited by:  Papers (25)  |  Patents (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (935 KB)

    A 2 × 2 nonblocking optical matrix switch, composed of four elemental switches formed in a slab waveguide, is described. Switching action is based on total internal reflection caused by an electrically controlled change in refractive index of the liquid crystal. Propagation loss was remarkably reduced to 2.3 dB/cm, both by using liquid crystal as a cladding layer and by operating at the 1.31 ... View full abstract»

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  • Guided wave approaches to optical bistability

    Publication Year: 1982, Page(s):1610 - 1619
    Cited by:  Papers (74)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1139 KB)

    We have analyzed four different guided wave approaches to achieving a power dependent refractive index and optical bistability. These include surface plasmons at the interface between a metal and a semiconductor, symmetric surface plasmon modes guided by thin metal films, conventional single film integrated optics waveguides, and multifilm integrated optics. The relative merits of each geometry ar... View full abstract»

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  • Single transverse mode condition of lens-like strip waveguide GaInAsP/InP lasers

    Publication Year: 1982, Page(s):1696 - 1703
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (710 KB)

    The theoretical analysis of the single transverse mode condition and lasing properties of a lens-like strip GaInAsP/InP laser is described. First, extended rate equations have been derived which include the carrier diffusion in the active layer and the carrier spread in the cladding layer and the dependency of the carrier lifetime on the current density. Next, it has been shown that the reasonably... View full abstract»

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  • V-grooved substrate buried heterostructure InGaAsP/InP laser emitting at 1.3 µm wavelength

    Publication Year: 1982, Page(s):1704 - 1711
    Cited by:  Papers (39)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (960 KB)

    Details of the fabrication, optimization of the dimensions of the active region, characteristics, and the aging results of theV- grooved substrate buried heterostructure (VSB) InGaAsP/InP laser are described. It is shown that the VSB laser can be fabricated in one-step epitaxy as well as two-step epitaxy. The active region width below 2.5 μm and the thickness of0.15-0.2 mu View full abstract»

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  • High-frequency characteristics of GaAlAs injection lasers

    Publication Year: 1982, Page(s):1718 - 1727
    Cited by:  Papers (39)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1134 KB)

    This paper discusses the results of an extensive experimental study of the high-frequency characteristics of several commercial (GaAl)As injection lasers. The lasers tested included the Hitachi buried heterostructure (BH), the Hitachi channel substrate planar (CSP), the Mitsubishi transverse junction stripe (TJS), the General Optronics stripe (GO), and the RCA constricted double heterostructure (C... View full abstract»

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  • Observations and theory of high-power butt coupling to LiNbO3-type waveguides

    Publication Year: 1982, Page(s):1751 - 1758
    Cited by:  Papers (11)  |  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (887 KB)

    We report the study and observation of high-efficiency (greater than 60 percent) and high-power (13 mW CW and 27 mW, 5 μs 5 percent duty cycle pulse) butt coupling of diode lasers to indiffused LiNbO3-type waveguides. We verified the predictions of the existing coupling theory at previously unreported power levels, and present a novel theoretical explanation of the effect of multip... View full abstract»

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  • Polarization-independent optical switch with multiple sections of Δβ reversal and a Gaussian taper function

    Publication Year: 1982, Page(s):1772 - 1779
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1097 KB)

    Multiple sectionDeltabetareversal polarization-independent integrated optic switches have been designed and demonstrated at a 0.83 μm wavelength. These switches use a Gaussian taper function to achieve low crosstalk in the parallel state. Calculated switch characteristics as related to an ideal Gaussian taper and approximations that can be fabricated by mask making are described. E... View full abstract»

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  • A novel deposit/spin waveguide interconnection (DSWI) for semiconductor integrated optics

    Publication Year: 1982, Page(s):1783 - 1789
    Cited by:  Papers (5)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (949 KB)

    We propose an efficient and simple optical interconnection between active semiconductor components by deposition and spin coating. Details of the waveguide design, the fabrication technique, and a promising material combination are given. Experimental results with an integrated laser-polyimide/SiOx(x sim 2) waveguide combination demonstrate low-threshold (2.0 kA/cm2 View full abstract»

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  • 3 &#215; 2 channel waveguide gyroscope couplers: Theory

    Publication Year: 1982, Page(s):1790 - 1796
    Cited by:  Papers (13)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (749 KB)

    Gyroscope couplers with three input ports and two output ports which can be implemented in a planar geometry are studied theoretically. Using a local normal mode description in the approximation of coupled mode theory, analytic output power expressions are obtained for the 3 × 2 branching waveguide coupler and the 3 × 2 directional waveguide coupler. When optimized, these devices behave ... View full abstract»

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  • Low-loss Ti:LiNbO3waveguide bends at λ = 1.3 µm

    Publication Year: 1982, Page(s):1802 - 1806
    Cited by:  Papers (85)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (523 KB)

    Low-loss waveguide bends are necessary for many proposed integrated optical circuits. The bend loss associated with anS-shaped transition connecting offset 6 μm wide titanium-indiffused lithium niobate strip waveguides has been measured as a function of transition length and initial Ti metal thickness for 1.3 μm wavelength. Losses as low as 0.2 ± 0.2 dB have been achieved... View full abstract»

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  • Efficient single-mode fiber to titanium diffused lithium niobate waveguide coupling for λ = 1.32 µm

    Publication Year: 1982, Page(s):1807 - 1813
    Cited by:  Papers (45)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (728 KB)

    We report detailed results on the achievement of very high optical throughput for titanium diffused lithium niobate waveguides coupled between input and output single-mode fibers. By determining appropriate diffusion parameters to obtain excellent dimensional match between the fiber and waveguide modes and simultaneously low propagation loss, we have achieved total measured fiber-waveguide-fiber i... View full abstract»

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  • Analysis of integrated-optics near 3 dB coupler and Mach-Zehnder interferometric modulator using four-port scattering matrix

    Publication Year: 1982, Page(s):1813 - 1816
    Cited by:  Papers (20)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (385 KB)

    The scattering matrix formalism for a lossless four-port device is used to describe the interferometric performance of the integrated-optics near 3 dB coupler and, consequently, the Mach-Zehnder interferometric modulator as a function of coupler and/or power imbalance. For the case of a coupler consisting of three single-mode dielectric guides forming aYjunction, a fourth port is incorp... View full abstract»

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  • [Back cover]

    Publication Year: 1982, Page(s): 0
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    Freely Available from IEEE
  • The nonlinear coherent coupler

    Publication Year: 1982, Page(s):1580 - 1583
    Cited by:  Papers (660)  |  Patents (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    This paper discusses the nonlinear coherent coupler (NLCC), a device useful for optical processing, but not bistable. This device utilizes the coherent interaction of two optical waveguides placed in close proximity. Because of the evanescent field overlap, these waveguides periodically exchange power. Nonlinear interactions modify the exchange of power and lead to strongly nonlinear transmission ... View full abstract»

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  • Auger recombination in quantum-well InGaAsP heterostructure lasers

    Publication Year: 1982, Page(s):1406 - 1409
    Cited by:  Papers (40)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    Interband nonradiative Auger recombination in quantum-well InGaAsP/InP heterostructure lasers has been calculated. It is found that the Auger rate is much reduced in the quasi two-dimensional quantum-well lasers. This suggests that the temperature sensitivity of quantum-well InGaAsP lasers is much less than ordinary structures with much higher values of T0at around room temperatures. View full abstract»

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  • Optical feedback effects upon laser diode oscillation field spectrum

    Publication Year: 1982, Page(s):1712 - 1717
    Cited by:  Papers (49)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (920 KB)

    Optical feedback effects on spectral properties of a semiconductor laser diode coupled to a single-mode fiber cavity are investigated. Linewidth reduction from 6 MHz to less than 30 kHz and frequency stability improvement with increasing feedback are reported. Experiments are in good agreement with theory for short fiber cavities. View full abstract»

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Aims & Scope

The IEEE Journal of Quantum Electronics is dedicated to the publication of manuscripts reporting novel experimental or theoretical results in the broad field of the science and technology of quantum electronics.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Prof. Hon Ki Tsang
Chinese University of Hong Kong