A MODULAR FREQUENCY Philippe MULTIPLEXER BANDS ~ WITH OPERATING TWO LINEAR EACH SIMULTANEOUSLY ORTHOGONAL IN FOUR ~ Nhu BUI-HAI POLARIZATION MAGNE ABSTRACT A multiplexer using quasi-optical filters, directional couplers, Tchebischeff and Butterworth filters and orthomode transducer, can operate simultaneously in four CCIR frequency bands for Microwave links: - One half 3.6 - 4.2 GHz frequen

DETECTION OF CPSK WITH TIMING AND SIGNALS JITTER IN NONLINEAR RECEIVERS PHASE ( 1 ) S.BENEDETTO, E.BIGLIERI ABSTRACT This PSK for system noise paper when describes besides a technique the effects instant for evaluating the performance interference device phase. of a of intersymbol including and carrier general and Gaussian and circuits allows the combi in the we must consider the a rec

A NOVE"L FM DETECTOR INTERFERENCE FOR SUPPRESSION OF INTERCHANNEL T. S. Sundresh *, F. A. Cassara, ABSTRACT + and H. Schachter + In this paper a novel FM detector capable of suppressing the degradation in receiver performance due to the presence of an interfering signal is presented. This novel detector consists of two phase-locked loop FM demodulators interconnected in such a manner to per

11 AND 15 GHz PCM RADIO-RELAY SYSTEMS Kohei Nishino*, Akira Hosoda*, Shoji Kubo*, Tadashi Mukai* ABSTRACT This paper describes the 11 GHz and 15 GHz PCM radio relay systems, capable of conveying 65 Mb/s per radio channel, developed by Nippon Telegraph and Telephone Public Corporation NTT). The system employs 4-phase digital modulation and coherent detection. Radio equipment is fully sol

SELF-IMAGING BY PHASE COINCIDENCES IN RECTANGULAR DIELECTRIC WAVEGUIDES E. VogesX and R. Ulrichxx ABSTRACT The imaging properties of multimode dielectric waveguides of rectangular cross-section, having a homogeneous refractive index nf' are investigated theoretically and experimentally. Two-dimensional self-images are formed by the phase coincidences of a large number of modes if the effecti

INTEGRATED OPTICAL MICROSTRUCTURES EXAMINATION BY FLUORESCENCE A.M. ROY ABSTRACT In this paper we shall review a method permitting the observation of optical fields propagating in microstructures for integrated optics. This method is based on the observation of the fluorescence emitted by a thin plastic film deposited upon the structure to be examined. Some results concerning the observation o

COUPLING OF OPTICAL FIBRES BY MEANS OF VOLUME HOLOGRAMS M. P. Jordan, R. Kompfner, C. J. R. Sheppard and L. Solymar Abstract Two holographic couplers capable of coupling to each other two bundles of optical fibres are discussed. The analysis follows Kogelnik's method /1/ of deriving coupled differential equations inside the holographic medium. The arising partial differential equations a

OPEN SEMICONDUCTOR WAVEGUIDE FOR MILLIMETER WAVE APPLICATION R. Karg, H. Ermert, H. Brand, G. Appelhans ABSTRACT A rectangular cally dielectric semiconductor waveguide is theoretimethods. material Depending effect In an is on is investigated by transverse mode matching experiment changed guide the resistivity of the semiconductor a GaAs laser beam. by illuminating with the config



Ti : LiNb03 ELECTROOPTICAL ACTIVE COMPONENTS FOR INTEGRATED OPTICS M. PAPUCHON In this paper we shall present the results obtained at ThomsonCSF in the. realization of active electrooptical components using the diffusion of Titanium in LiNbQ3 Crystals. We shall discuss in details the switching problem and in particular the conditions required to obtain good switching efficiency and the diff