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Journal of Lightwave Technology

Issue 2 • Date February 1987

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Displaying Results 1 - 15 of 15
  • [Front cover and table of contents]

    Publication Year: 1987, Page(s): 0
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    Freely Available from IEEE
  • [Back cover]

    Publication Year: 1987, Page(s): c4
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    Freely Available from IEEE
  • Mode-field diameter measurements for single-mode fibers with non-Gaussian field profiles

    Publication Year: 1987, Page(s):211 - 217
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2336 KB)

    The mode-field diameter (MFD) of a single-mode fiber can be measured using several different techniques. The extent to which these techniques are consistent depends upon the definition used to compute the MFD and upon the fiber design. In this paper, three measurement techniques (far-field scan, offset joint, and knife-edge scan) are applied to the measurement of both conventional step-index fiber... View full abstract»

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  • An all-optical amplifier for terahertz AM signals: A proposal

    Publication Year: 1987, Page(s):236 - 242
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2192 KB)

    We propose an all-optical amplifier for AM signals which, in principle, is an integrated Mach-Zehnder interferometer where both arms are pumped with light from the incoming signal, amplified in a semiconductor laser amplifier. Thus the pump is the time integrated phase and amplitude average of the signal. In one of the arms a part of the nonamplified signal is injected, which modulates the optical... View full abstract»

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  • Design and characteristics of a branching component for bunched optical fiber using two graded-index rod lenses

    Publication Year: 1987, Page(s):206 - 210
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1456 KB)

    An optical branching component is proposed for coupling bunched optical fiber to mono-core optical fibers and the component loss and crosstalk characteristics are investigated. The component is constructed with two graded-index (GRIN) rod lenses for matching different parameters between bunched and mono-core optical fibers. The method of analyzing mismatching and misalignment losses is based on ge... View full abstract»

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  • Polarization characteristics of elliptic-core fibers with stress induced anisotropy

    Publication Year: 1987, Page(s):193 - 198
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1496 KB)

    We present a simple analytical method to study birefringence and polarization mode dispersion (PMD) of elliptic-core fibers with uniform or differential stress in the fiber cross section. The model takes account of both geometrical and stress birefringence, simultaneously. It is found that neglecting the geometrical birefringence, even under the weakly guiding approximation, can lead to significan... View full abstract»

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  • Germanium chemistry in the MCVD process for optical fiber fabrication

    Publication Year: 1987, Page(s):277 - 285
    Cited by:  Papers (32)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2888 KB)

    In the widely used modified chemical vapor deposition (MCVD) process for making optical fibers, germanium is the primary dopant for precisely increasing the refractive index of silica to form a guiding structure. The reactants in the process are usually GeCl4, SiCl4, and O2, often with POCl3, flowing in a silica support tube heated from the outside with ... View full abstract»

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  • Directional couplers made of nonidentical asymmetric slabs. Part II: Grating-assisted couplers

    Publication Year: 1987, Page(s):268 - 273
    Cited by:  Papers (96)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1616 KB)

    In this second part of the paper we discuss TE and TM mode directional couplers made of nonsynchronous, nonidentical asymmetric slab waveguides. Coupling is accomplished with the help of a diffraction grating that is placed on either of the two guides on the side facing the opposite slab. The grating couples the compound modes of the complete slab structure to each other. However, since the two sl... View full abstract»

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  • Asymptotic effective cutoff condition in single-mode optical fibers

    Publication Year: 1987, Page(s):199 - 205
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1944 KB)

    Recently some experimental investigations have shown that the effective cutoff wavelength of the LP11mode in a single-mode optical fiber decreases with increased distance from the optical source. In this paper such a phenomenon is theoretically investigated confirming that asymptotically the effective cutoff wavelength reaches a minimum value, dependent on few key parameters. Furthermor... View full abstract»

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  • Integrated optic strip waveguide phase modulator driven by a SAW

    Publication Year: 1987, Page(s):218 - 228
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3336 KB)

    Single-mode integrated optic strip waveguide phase modulators driven by a surface acoustic wave (SAW) are investigated theoretically and experimentally. Evaluating the overlap integral, a good agreement is obtained between measured and theoretical results. Measurements were performed on ZY -LiNbO3( ... View full abstract»

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  • Trapezoidal index single-mode fibers for the 1.55 µm band

    Publication Year: 1987, Page(s):255 - 259
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1488 KB)

    An analytical study is made of single-mode fibers with a trapezoidal index of refraction profile for low dispersion operation in the 1.55-μm band using Ge doped silica core and pure silica cladding. It is found that certain trapezoid proportions give a fiber with a combination of less Ge doping, larger core diameter, faster decay of the field in the radial direction within the cladding, and s... View full abstract»

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  • Polarization independent coherent optical receiver

    Publication Year: 1987, Page(s):274 - 276
    Cited by:  Papers (90)  |  Patents (110)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1024 KB)

    This paper describes an optical heterodyne receiver for DPSK signals which can receive an optical signal having an arbitrary polarization state. This is achieved by splitting the received signal between two orthogonal polarization axes and processing the resulting two signals as in a conventional DPSK heterodyne receiver. The sum of the two demodulated signals provides a baseband signal independen... View full abstract»

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  • Choosing relative optical path delays in series-topology interferometric sensor arrays

    Publication Year: 1987, Page(s):229 - 235
    Cited by:  Papers (15)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2008 KB)

    We consider the problem of selecting relative optical path delays for a chain of Mach-Zehnder interferometric sensors which are to be multiplexed using a frequency modulated source (FMCW multiplexing) or a short coherence-length source (coherence multiplexing). Possible sets of delays which do not lead to crosstalk are described for two different series topologies. It is shown that the rapid growt... View full abstract»

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  • Return loss requirements for optical duplex transmission

    Publication Year: 1987, Page(s):243 - 254
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2864 KB)

    There has recently been considerable attention given to bidirectional transmission over the same optical fiber. One of the impairments associated with this type of system is receiver sensitivity degradation due to reflected power. This paper presents an analysis of this impairment and compares it with experimental results. It is shown that for a certain class of systems relatively large reflection... View full abstract»

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  • Single-mode fiber-film directional coupler

    Publication Year: 1987, Page(s):260 - 267
    Cited by:  Papers (13)  |  Patents (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2344 KB)

    Directional coupling has been observed both from a single-mode fiber to a single mode planar polymer waveguide and vice versa. The fiber coupler was prepared by polishing. The matching of propagation constants was achieved by using a polymer film only a few hundred nanometers thick. View full abstract»

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Aims & Scope

The JOURNAL OF LIGHTWAVE TECHNOLOGY is comprised of original contributions, both regular papers and letters, covering work in all aspects of optical guided-wave science, technology, and engineering. Manuscripts are solicited which report original theoretical and/or experimental results which advance the technological base of guided-wave technology. Tutorial and review papers are by invitation only. Topics of interest include the following: fiber and cable technologies, active and passive guided-wave componentry (light sources, detectors, repeaters, switches, fiber sensors, etc.); integrated optics and optoelectronics; and systems, subsystems, new applications and unique field trials. System oriented manuscripts should be concerned with systems which perform a function not previously available, out-perform previously established systems, or represent enhancements in the state of the art in general.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Peter J. Winzer
Alcatel-Lucent Bell Labs