摘要:

AbstractThe electro‐optic (EO) characteristics of the strip‐loaded outdiffusion guide (SLOG) [1] are presented. A Mach‐Zehnder interferometer using the SLOG technique is fabricated for test. The results show that the EO effect is greatly enhanced and the extinction ratio is also larger compared to those made by the conventional titanium indiffusion technique. Moreover, the fabrication takes less time, yet the waveguide has no surface guide and less damage. Experimental and computer‐simulated results are also shown for comparison. © 1992 John Wiley&S

ISSN:0895-2477    

DOI:10.1002/mop.4650051202

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1992

数据来源: WILEY

摘要:

AbstractExpressions for the conversion between ABCD parameters and S parameters are derived without making assumptions as to the nature of the normalizing impedances. The resulting equations contain the port 1 normalizing impedance Z01, and the port 2 normalizing impedance Z02, and are valid even when these are complex. © 1992 John Wiley&Sons, Inc

ISSN:0895-2477    

DOI:10.1002/mop.4650051203

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1992

数据来源: WILEY

摘要:

AbstractIn this article the characterization of planar structures using the method of lines in cylindrical coordinates is presented. The capacitance of different segments of a miscrostrip circular ring is studied: special attention is given to edge stray capacitances. This method of calculation can find applications in the characterization of microstrip components in MIC, MHMIC, and MMIC with shapes easily fitted to cylindrical coordinates (e.g., circular ring, fan shape, etc.). © 1992 John Wiley&Sons. Inc

ISSN:0895-2477    

DOI:10.1002/mop.4650051204

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1992

数据来源: WILEY

摘要:

AbstractAn explicit central difference scheme to implement the beam‐propagation algorithm for analyzing pulse propagation in photonic integrated circuits is discussed. The method has been successfully applied to planar waveguides, channel waveguides, and waveguide couplers. The method shows stability even after long propagation distances and does not involve computation of fast Fourier transform at any step, contrary to the methods discussed earlier. © 1992 John Wiley&Sons, I

ISSN:0895-2477    

DOI:10.1002/mop.4650051205

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1992

数据来源: WILEY

摘要:

AbstractThis article presents an extension of the classical calibration method for RCS measurements on vectorial network analyzer. The classical one [1, 2] is based on the dynamical range of the measurement system with a single reference, which causes distortion if the target return level is very low compared to the calibration reference. The new differential method uses at least two measurements of known targets and contributes a reference to the system in addition to the classical method. In addition a new dynamical scaling is developed using this technique. This is very important in the measurement of targets with a wide dynamical return range. The application of this method is compared to the existing one. ©John Wiley&Sons, Inc

ISSN:0895-2477    

DOI:10.1002/mop.4650051206

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1992

数据来源: WILEY

摘要:

AbstractA technique has been developed for measurement of the phase of reflection and transmission coefficients for single‐axis millimeterwave quasioptical systems. The method is verified by measurements of dielectric‐mounted strip arrays. Application of the method to monolithic millimeter‐wave diode arrays is discussed. © 1992 John Wiley&Son

ISSN:0895-2477    

DOI:10.1002/mop.4650051207

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1992

数据来源: WILEY

摘要:

AbstractThe relaxation technique for computing the electrostatic potential in 2D is extended to open‐boundary problems. Two methods are introduced for updating the outer boundary potential between iterations using a numerical Green's function. Comparisons with conventional grounded‐boundary results show that greatly increased accuracy is obtainable with the open‐boundary method. © 1992 John Wiley&Son

ISSN:0895-2477    

DOI:10.1002/mop.4650051208

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1992

数据来源: WILEY

摘要:

AbstractA novel wavelength division multiplexing/demultiplexing (WDM) system using acousto‐optic Bragg cell is presented. The system is adaptable for any wavelength deviation of light sources caused by temperature changes and allows changing the operating wavelengths over a wide range. High diffraction efficiency, high resolution, and a large number of channels are obtained. Computer simulation for a five‐channel system in the 0.8‐μm region is presented. © 1992 John Wiley&So

ISSN:0895-2477    

DOI:10.1002/mop.4650051209

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1992

数据来源: WILEY

摘要:

AbstractIn this Letter we show, using the classical spectral domain approach modified by asymptotic expansions, the evolution of the frequency range of complex modes of boxed microstrip lines for several sets of physical and geometrical parameters. © 1992 John Wiley&Sons, Inc

ISSN:0895-2477    

DOI:10.1002/mop.4650051210

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1992

数据来源: WILEY

摘要:

AbstractThe influence of lateral asymmetry on the electro‐optic effect of a Ti:LiNbO3Y‐junction waveguide for integrated optical devices is investigated. The characteristic discrepancy of a Y junction related to the photolithographic process constraint is simulated. It is found that the half‐wave voltage will increase 50% if the width of waveguide is 4 μm and the branch angle is rounded by a circular shape with a radius of about 5 μm. Also, if the Y branch has a lateral offset of 2.5 μm with respect to the central axis of the input waveguide, the extinction ratio will decay to 5 dB. © 1992 John Wiley&

ISSN:0895-2477    

DOI:10.1002/mop.4650051211

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1992

数据来源: WILEY