By Topic

# Journal of Lightwave Technology

## Filter Results

Displaying Results 1 - 25 of 43
• ### Performance of single- and double-ring resonators using 3×3 optical-fiber coupler

Publication Year: 1993, Page(s):1998 - 2008
Cited by:  Papers (12)
| | PDF (692 KB)

This paper investigates theoretically the transmission characteristics of single- and double-ring resonators using 3×3 optical-fiber couplers. Two configurations of a 3×3 coupler are considered: configuration A, with the three fibers centered at the vertices of an equilateral triangle, and configuration B, with their centers aligned in a straight line. It is found that a ring resonator... View full abstract»

• ### Tunable liquid-crystal Fabry-Perot interferometer filter for wavelength-division multiplexing communication systems

Publication Year: 1993, Page(s):2033 - 2043
Cited by:  Papers (50)  |  Patents (20)
| | PDF (988 KB)

We explain how to obtain the bandwidth and tunable range required for wavelength-division multiplexing communication systems and how to design tunable liquid-crystal Fabry-Perot interferometer filters. The main factors determining the performance are liquid-crystal loss, mirror loss, surface roughness, and parallelism, as well as mirror reflectivity and cavity gap. Experimental results closely agr... View full abstract»

• ### Grating-assisted nonlinear codirectional couplers

Publication Year: 1993, Page(s):1990 - 1997
Cited by:  Papers (3)  |  Patents (2)
| | PDF (672 KB)

The advantages and flexibilities of using a grating to assist in the process of all-optical codirectional switching are investigated theoretically. It is found that the phase-matching condition which is required for complete switching is power dependent. In this respect, all-optical switching can be sensitive to a small change in input power level. In addition, this power-induced resonant tuning m... View full abstract»

• ### Optical fiber loop memory using vertical to surface transmission electro-photonic device

Publication Year: 1993, Page(s):2140 - 2144
Cited by:  Papers (8)
| | PDF (364 KB)

An optical fiber loop memory is proposed, using a photonic switch device of a vertical to surface transmission electro-photonic device. The photonic switch works as an optical pulse repeater. The operation stability as the memory was analyzed, and more than 30 minutes storage time has been realized. The maximum operational clock was as high as 20 MHz. This memory may be a part of the future optica... View full abstract»

• ### Propagation of infrared radiation in hollow microstructural cylindrical waveguides

Publication Year: 1993, Page(s):1956 - 1964
Cited by:  Papers (3)
| | PDF (776 KB)

Theoretical and numerical results are presented on the propagation of infrared radiation in TE01-, TM01-, and TE11-like modes in an empty cylindrical, gold-coated waveguide of micron dimensions. Low-loss propagation is possible for the TE01-like mode, whose configuration is similar to that of the TE01 mode in a guide with perfectly conducting ... View full abstract»

• ### Optical frequency conversion using nearly degenerate four-wave mixing in a distributed-feedback semiconductor laser: theory and experiment

Publication Year: 1993, Page(s):2026 - 2032
Cited by:  Papers (13)  |  Patents (2)
| | PDF (576 KB)

An analytical description of nearly degenerate four-wave mixing in a single-mode semiconductor laser operating above threshold is given by using the rate-equation model. The theoretical result is confirmed by the experiment measuring the power amplification of probe and conjugate waves. A 155-Mb/s frequency-shift keying optical-transmission system is demonstrated using four-wave mixing in a bulk d... View full abstract»

• ### Distributed single-mode fiber to single-mode planar waveguide coupler

Publication Year: 1993, Page(s):1985 - 1989
Cited by:  Papers (12)
| | PDF (356 KB)

Light transfer between a curved single-mode fiber and a single-mode planar waveguide is investigated experimentally in dependence on the refractive index and thickness of the planar waveguide and for different polishing depths. Marcuse's model is applied to treat theoretically the coupler, leading to a very good agreement with the experimental results View full abstract»

• ### Fiber four-wave mixing suppression using two incoherent polarized lights

Publication Year: 1993, Page(s):2116 - 2122
Cited by:  Papers (11)  |  Patents (2)
| | PDF (512 KB)

A novel technique is proposed to reduce fiber fourwave mixing (FWM) in multichannel transmissions. Transmitters are constructed such that the light for one channel is composed of two incoherent orthogonal polarized lights. Theoretical treatment indicates that the FWM light power can be reduced by 3/8 and that the noise power due to the FWM light can be reduced by 3/16 by using the new technique. R... View full abstract»

• ### A photonic integrated-optic RF phase shifter for phased array antenna beam-forming applications

Publication Year: 1993, Page(s):2201 - 2205
Cited by:  Papers (65)  |  Patents (1)
| | PDF (348 KB)

A photonic in-phase/quadrature (I-Q) RF phase shifter utilizing two integrated optic Mach-Zehnder modulators has been tested. This phase shifter demonstrates the capability of 360° phase control, <1° RF errors at constant amplitude, and <1° errors over a 30-dB RF amplitude taper View full abstract»

• ### Simple measurement of fiber dispersion and of chirp parameter of intensity modulated light emitter

Publication Year: 1993, Page(s):1937 - 1940
Cited by:  Papers (291)  |  Patents (11)
| | PDF (308 KB)

We report a novel method to measure two important parameters for optical fiber intensity modulated transmission systems: dispersion of optical fibers and chirp parameter of modulated light emitters. The method is easy, quick, and accurate for chirp parameter in the -10-to-10 range View full abstract»

• ### Neural-processing-type optical WDM demultiplexer

Publication Year: 1993, Page(s):2130 - 2139
Cited by:  Papers (8)
| | PDF (756 KB)

A neural-processing-type optical WDM demultiplexer consisting of a multimode waveguide, a detector array, and an electrical neural network (NN) is described. This demultiplexer regenerates the original signals by recognizing the different speckle patterns of each channel with the pattern-recognition function of an NN. The demultiplexing properties can be flexibly changed, in the electrical domain,... View full abstract»

• ### Eigenstates of polarization of elliptical single-mode fibers

Publication Year: 1993, Page(s):1946 - 1955
Cited by:  Papers (1)
| | PDF (652 KB)

The degree of polarization of radiation in an elliptical polarization-maintaining fiber and the polarization states of eigenpolarization modes of such fibers have been experimentally investigated in a wide spectral range. It has been shown that the elliptical fibers are uniform, homogeneously twisted fibers with elliptically polarized eigenpolarization modes. The ellipticity of the eigenpolarizati... View full abstract»

• ### Stable single-mode erbium fiber-grating laser for digital communication

Publication Year: 1993, Page(s):2021 - 2025
Cited by:  Papers (82)  |  Patents (16)
| | PDF (384 KB)

In this paper we report the fabrication of a short, robust, single-mode Er3+ fiber-grating laser. This laser is proven by the successful outcome of a long-term bit-error-rate test at the 10-15 level in a 5- G/s fiber transmission experiment. In the process we present a new pumping geometry, the elucidation of one origin of relaxation oscillations that have plagued previous la... View full abstract»

• ### Ge-laminated polarizer for 790-850-nm applications with extinction ratios larger than 50 dB and insertion losses below 0.4 dB

Publication Year: 1993, Page(s):1978 - 1984
Cited by:  Papers (4)
| | PDF (764 KB)

A laminated structure composed of alternating layers of Ge and SiO 2 (Ge-LAMIPOL) is usable as a miniaturized polarizer at 790-850 nm in fiber optic gyroscopes, for instance. However, peeling of the sputter deposited layers, due to the weak binding strength between Ge and SiO2, is a serious problem during the slicing process in preparation for assembly in the fiber. In order ... View full abstract»

• ### The Y-laser: a multifunctional device for optical communication systems and switching networks

Publication Year: 1993, Page(s):2066 - 2075
Cited by:  Papers (14)  |  Patents (8)
| | PDF (840 KB)

This paper gives a comprehensive review of the recent progress obtained with various operation modes of a Y-shaped all active waveguide device with three optical input/output ports, the so called Y-laser. Used as a monolithic semiconductor light source, single-mode emission with an extremely large cw tuning range of more than 50 nm is accessed. Single current step tuning spans up to 8-nm range. Se... View full abstract»

• ### Long distance transmission through distributed erbium-doped fibers

Publication Year: 1993, Page(s):2105 - 2115
Cited by:  Papers (14)
| | PDF (936 KB)

High bit rate, all-optical long-distance transmission could be created through the combined use of loss-compensating gain in erbium-doped fibers and solitons. A detailed analysis of the distributed erbium-doped fiber, including the spectral-gain dependency, is combined with an optimum design of the transmission fiber and general bit-error-rate calculations. Changes in wavenumber, group velocity, a... View full abstract»

• ### Design of a multistripe array grating integrated cavity (MAGIC) laser

Publication Year: 1993, Page(s):2191 - 2200
Cited by:  Papers (13)  |  Patents (12)
| | PDF (948 KB)

We consider the design of a multistripe array grating integrated cavity (MAGIC) laser based upon the Rowland circle solution for a circular grating. We discuss, in detail, the implementation of the MAGIC laser in the InP-based materials system for operation in the 1.5-μm fiber band. Particular attention is given to optical aberrations and their correction. The optical considerations presented a... View full abstract»

• ### Polarization analysis of LP01 and LP11 intermodal interference in highly birefringent bow-tie optical fibers

Publication Year: 1993, Page(s):1925 - 1936
Cited by:  Papers (12)
| | PDF (912 KB)

A polarization analysis of bimodal highly birefringent fibers in which LP01, LP11, interference takes place is performed. The polarization state of the interference pattern is theoretically described in terms of recently proposed spatial Stokes parameters on the basis of coupled-mode equations and Jones matrix formalism. The general quasimonochromatic case is considered and d... View full abstract»

• ### Design and performance of a multiple element slab waveguide spectrograph for multimode fiber-optic WDM systems

Publication Year: 1993, Page(s):2009 - 2014
Cited by:  Papers (8)  |  Patents (32)
| | PDF (620 KB)

A new type of compact (<7 cm2) multiple element slab waveguide spectrograph suitable for medium resolution fiber-optic wavelength division multiplexing (WDM) applications in the 700 nm to 900 nm optical band is described. The spectrograph consists of a replicated diffraction grating formed on the convex edge of a multilayer glass-ceramic slab waveguide stack The grating design, based... View full abstract»

• ### Characteristics of S-shaped waveguide structures by the annealed proton exchange process in LiNbO3

Publication Year: 1993, Page(s):2044 - 2051
Cited by:  Papers (5)  |  Patents (1)
| | PDF (652 KB)

The loss of S-shaped waveguide bends in annealed proton-exchanged LiNbO3 integrated optical devices is found to be dependent on the length of thermal annealing time. The minimum transition length required in order to have losses as low as 0.2 dB is 2.0 mm for a 0.1-mm lateral offset. Intersecting waveguides based on S-shaped structures have been characterized for passive crossovers. An ... View full abstract»

• ### Theoretical determination of sensitivity penalty for burst mode: fiber optic receivers

Publication Year: 1993, Page(s):2145 - 2149
Cited by:  Papers (29)  |  Patents (10)
| | PDF (432 KB)

Digital burst mode fiber optic receivers are being developed that establish the threshold for determination of a received 1' or 0' based on reception of the first few received `1s.' Such receivers can provide a large dynamic range while allowing the use of a minimum burst preamble. However, a sensitivity penalty with respect to continuous mode receivers which establish an ideal threshold exists.... View full abstract»

• ### Semiempirical relation for curved optical waveguide design in the edge-guided mode regime

Publication Year: 1993, Page(s):1965 - 1969
Cited by:  Papers (8)
| | PDF (416 KB)

A semiempirical relation has been developed for determining the minimum allowable radius of curvature of a circular waveguide with an edge-guided fundamental mode. The specified parameters are the wavelength, the effective refractive index of the waveguide, the lateral index step, and the allowable radiation loss coefficient. This relation was fitted and verified against numerically evaluated solu... View full abstract»

• ### Ultra-high-speed PLL-type clock recovery circuit based on all-optical gain modulation in traveling-wave laser diode amplifier

Publication Year: 1993, Page(s):2123 - 2129
Cited by:  Papers (36)  |  Patents (24)
| | PDF (592 KB)

A new phase lock loop (PLL) is developed for very-high-speed optical timing extraction using traveling-wave laser-diode amplifier (TW-LDA) as a phase detector. The all-optical gain modulation of the TW-LDA is utilized to detect the relative phase difference between an optical signal and an optical clock The frequency response of the optical gain modulation measured with the optical heterodyne tech... View full abstract»

• ### Design of strain-free-fiber with nonuniform dopant concentration for stimulated Brillouin scattering suppression

Publication Year: 1993, Page(s):1941 - 1945
Cited by:  Papers (20)  |  Patents (9)
| | PDF (372 KB)

The loss and dispersion properties of fibers with a nonuniform dopant concentration along their length are investigated theoretically and simple equations are obtained for loss and dispersion estimation. These equations are used to discuss fiber properties and a design procedure by which to achieve SBS suppression. The loss increases by 0.02-0.03 dB/km/% and the dispersion decreases by -2.4 ps/km/... View full abstract»

• ### Improved electrooptic efficiency in guided-wave modulators

Publication Year: 1993, Page(s):2076 - 2079
Cited by:  Papers (5)
| | PDF (316 KB)

The positioning of the waveguide in the electrode gap in Xc -cut, Yc-propagating LiNbO3 Mach-Zehnder intensity modulators with coplanar waveguide electrodes is analyzed, and experimentally investigated for the first time. It is found that for electrode gaps greater than 10 μm, the gap can be further increased with little increase in the drive voltage if the posi... View full abstract»

## 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