181 |
Integrated self injection locked self phase loop locked optoelectronic oscillator |
AU2014254441 |
2014-02-19 |
AU2014254441B2 |
2017-09-07 |
PODDAR AJAY KUMAR; ROHDE ULRICH L; DARYOUSH AFSHIN S |
The present invention details fabrication guidelines of integrated optoelectronic oscillators (100) with frequency and phase stability, having higher frequency selectivity in a relatively small size (compared to the larger size of a higher order electrically realized RF filter), reduced temperature sensitivity, and minimized frequency drift. The integrated photonic components (101, 103, 105, 107) and RF oscillator (140) may use Silicon photonics and microelectronic integration using CMOS and BiCMOS technology, eliminating the need for bulky and/or discrete optical and microwave components. |
182 |
OPTOELECTRONIC OSCILLATOR WITH TUNABLE FILTER |
CA2996033 |
2016-08-19 |
CA2996033A1 |
2017-03-02 |
NICHOLLS CHARLES WILLIAM TREMLETT |
An optoelectronic oscillator (OEO) is disclosed comprising an electronically tunable filter for transposing narrow pass band characteristics of a surface acoustic wave (SAW) filter to a microwave frequency to provide mode selection in the OEO. An OEO is disclosed comprising a set of optical domain components, a downconverter in communication with an output of the optical domain components, and a set of radio frequency (RF) domain components in communication with an output of the downconverter. The set of RF domain components comprises a tunable filter operating at a filter center frequency and having an output coupled to the set of optical domain components for communicating a mode selection result. The tunable filter including a tuner; and a sub-filter. The sub-filter operating at a fixed center frequency to provide mode selection and adjacent mode suppression with respect to the tunable filter center frequency. The sub-filter center frequency being lower than the tunable filter center frequency, and a ratio of the tunable filter center frequency to a bandwidth of the sub-filter being at least 1000:1. |
183 |
Integrated self injection locked self phase loop locked optoelectronic oscillator |
AU2014254441 |
2014-02-19 |
AU2014254441A1 |
2015-11-05 |
PODDAR AJAY KUMAR; ROHDE ULRICH L; DARYOUSH AFSHIN S |
The present invention details fabrication guidelines of integrated optoelectronic oscillators (100) with frequency and phase stability, having higher frequency selectivity in a relatively small size (compared to the larger size of a higher order electrically realized RF filter), reduced temperature sensitivity, and minimized frequency drift. The integrated photonic components (101, 103, 105, 107) and RF oscillator (140) may use Silicon photonics and microelectronic integration using CMOS and BiCMOS technology, eliminating the need for bulky and/or discrete optical and microwave components. |
184 |
OSCILLATEUR OPTOELECTRONIQUE ACCORDABLE ET A FAIBLE BRUIT DE PHASE |
FR1200858 |
2012-03-22 |
FR2988537A1 |
2013-09-27 |
VAN DIJK FREDERIC; ENARD ALAIN; ACCARD ALAIN |
L'invention concerne un oscillateur optoélectronique qui comprend une source laser (1') et une boucle optoélectronique fermée (10') comportant un modulateur optoélectronique de la source laser, une fibre optique (12'), un photodétecteur (13'), des moyens de filtrage d'une fréquence d'oscillation, un coupleur-diviseur (15') relié à la sortie (S') de l'oscillateur. La source laser est un laser bi-fréquence optique à deux sections, une première section (l'a) apte à émettre un signal optique de fréquence v1, une deuxième section (1'b) apte à émettre un signal optique de fréquence v2. Le photodétecteur (13') est photo mélangeur et apte à fournir en sortie un signal électrique de fréquence F = |v1- v2|. Le modulateur (17') est relié à la première section (1'a) mais pas à la deuxième. Le laser bi-fréquence, le photodétecteur photo mélangeur et le modulateur de la première section suffisent à réaliser les moyens de filtrage. |
185 |
ОПТОЭЛЕКТРИЧЕСКИЙ ПРЕОБРАЗОВАТЕЛЬ |
RU2007142878 |
2007-11-19 |
RU2365027C1 |
2009-08-20 |
MIKHEEV GENNADIJ MIKHAJLOVICH; ZONOV RUSLAN GENNAD EVICH; ALEKSANDROV VLADIMIR ALEKSEEVICH; RUSSKIKH LJUDMILA MIKHAJLOVNA |
Изобретениеотноситсяк оптоэлектронике, вчастностик устройствамдляпреобразованияимпульсногооптическогоизлученияв импульсныйэлектрическийсигнал. Ономожетбытьиспользованодлярегистрацииоптическогоизлучения, атакжедляпостроенияуглоизмерительныхустройств. Оптоэлектрическийпреобразовательсостоитизподложки, проводящейпленкии двухпроводящихпараллельныхэлектродов, имеющихэлектрическийконтактс поверхностьюпленки. Отличительнойособенностьюявляетсято, чтопроводящаяпленкаоптоэлектрическогопреобразователявыполненав видетолстопленочногорезисторанаосновесеребраи палладия. Техническийрезультат - повышениестойкостипреобразователяк механическими оптическимвоздействиям. 3 ил. |
186 |
Method and system for operating an atomic clock with reduced spin-exchange broadening of atomic clock resonances |
AU2003253893 |
2003-07-15 |
AU2003253893A8 |
2004-09-30 |
HAPPER WILLIAM; WALTER DANIEL K |
|
187 |
Source of millimetric electromagnetic radiation includes resonator coupled to antenna and resonance-shifting component for lossless switching of e.g. radar array with dielectric lens |
DE19941870 |
1999-09-02 |
DE19941870A1 |
2000-03-23 |
KATO TAKATOSHI; SAKAMOTO KOICHI; IIO KENICHI; ISHIKAWA YOHEI |
The resonator (5) is connected to a switching unit (7) or alternatively a component with variable reactance (not shown). The resonant frequency of the resonator is changed by switching the unit on and off, or by changing the reactance of the component. An antenna (9) radiates electromagnetic energy stored in the resonator, at a fixed frequency. It also includes a transmission line (6) to be coupled with the resonator. |
188 |
Homodyne detector, heterodyne detector and generator device for electromagnetic radiation |
DE19619442 |
1996-05-14 |
DE19619442A1 |
1998-03-05 |
PRETTL WILHELM PROF DR; HUBER WOLFGANG DIPL PHYS; BETZ JOSEF DR; SCHILZ ARNO DIPL PHYS |
The detector and generator carries out its functions in the high temperature superconductive layers of the device. These layers are grown epitaxially on a substrate, so that the C-axis of the superconductor is tilted with respect to the substrate surface normal. The high temperature superconductive layer can be in a superconductive mode, or in a transition from normally conductive to the superconductive mode. A current is actively introduced into the high temperature superconductive layer, and the heterodyne detection local oscillator is of an external type, or may be an internal generator. |
189 |
Optical source for a communication system |
DE69313287 |
1993-06-29 |
DE69313287T2 |
1998-01-02 |
WALKER NIGEL |
|
190 |
Optical microwave generation method for mobile radio system |
DE19613824 |
1996-04-06 |
DE19613824A1 |
1997-10-16 |
NOWAK WALTER PROF DR ING; SAUER MICHAEL DIPL ING |
The method involves using a light source (1), e.g. a laser, a photoreceiver (8), and a transmission path (3,6,7) between the light and the photoreceiver. The spectrally narrow band light of the source is first modulated by microwave frequencies by a modulator (3), followed by targeted, dispersive treatment. Thus a maximum microwave current (9) and maximum available performance are evoked in the photoreceiver, with the frequency equal to the modulation frequency, or its multiple. Preferably, a Mach-Zehnder type, or a linear phase modulator are used. |
191 |
Code division multiple access signal receiving apparatus for base station |
AU8044894 |
1994-12-14 |
AU674111B2 |
1996-12-05 |
SATO TOSHIFUMI |
|
192 |
Oscillator. |
ES90915802 |
1990-10-05 |
ES2080162T3 |
1996-02-01 |
LEWIS MEIRION FRANCIS; WIGHT DAVID ROBERT |
EL OSCILADOR DE UNA SOLA FRECUENCIA (10) COMPRENDE UN DIODO LASER (12), UN HAZ DE FIBRAS OPTICAS (22) ACTUANDO COMO FILTRO DE LINEA DE RETARDO, UN FOTODIODO (26) Y UN CIRCUITO DE REALIMENTACION AL DIODO LASER (12) CONTENIENDO UN AMPLIFICADOR (28) Y UN FILTRADO Q INFERIOR ADICIONAL (29, 34). LA SALIDA DEL DIODO LASER (18) SOPORTA UNA SEÑAL DE MODULACION QUE ES FILTRADA A UNA SERIE DE FRECUENCIAS SINCRONICAS O "RESONANTES" POR EL HAZ (22), VUELTO A CONVERTIR EN UNA SEÑAL ELECTRICA POR EL DIODO (26), AMPLIFICADA, Y REDUCIDA A UNA SOLA FRECUENCIA RESONANTE POR EL FILTRADO INFERIOR Q (29, 34). DESPUES SE APLICA AL DIODO LASER (12) COMO REALIMENTACION POSITIVA PARA MODULAR LA SALIDA DEL DIODO (18). LA SALIDA DEL OSCILADOR (10) PUEDE TOMARSE COMO UNA SEÑAL DE MICROONDAS O EN UN PORTADOR OPTICO. LA INVENCION PROPORCIONA UN OSCILADOR INCORPORANDO REALIMENTACION EN UN PORTADOR OPTICO. |
193 |
Code division multiple access signal receiving apparatus for base station |
AU8044894 |
1994-12-14 |
AU8044894A |
1995-06-22 |
SATO TOSHIFUMI |
|
194 |
Optical source for communications system |
AU4351893 |
1993-06-29 |
AU4351893A |
1994-01-24 |
WALKER NIGEL GORDON |
|
195 |
PHOTOSENSOR |
SU4461145 |
1988-04-26 |
SU1592726A2 |
1990-09-15 |
NOVINKOV GENNADIJ A |
|
196 |
NON-PIEZOELECTRIC RESONATOR WITH A HIGH Q FACTOR |
DE3665241 |
1986-05-22 |
DE3665241D1 |
1989-09-28 |
DIEULESAINT EUGENE; ROYER DANIEL |
|
197 |
A circuit, provided with a through irradiation with light controllable semiconductor element. |
NL7106550 |
1971-05-13 |
NL179526C |
1986-09-16 |
|
|
198 |
FR2476359B1 - |
FR8003519 |
1980-02-18 |
FR2476359B1 |
1984-09-07 |
|
|
199 |
Method and device for inputting graphic data for generating electrical quantities for open-loop and closed-loop control purposes |
DE3239164 |
1982-10-22 |
DE3239164A1 |
1984-04-26 |
SCHWARZ HANS WERNER |
For converting graphic data such as the contour variation 5 of curves and/or straight lines, into electrical quantities for open-loop or closed-loop control purposes and so forth, this variation is applied to a data carrier 1 and correspondingly cut out and the remaining opaque carrier section 7 is photo-optically or mechanically scanned along the visible contours 5. The scanned values are supplied to a device, for example a photo-electrical unit, for conversion into electrical quantities and are forwarded from this to an arrangement to be controlled. For this purpose, a movable part is displaced relative to a fixed part, namely the data carrier 1 relative to a fixed gap-shaped penetration 22 or conversely, during which process in each case the part of the visible contour variation in the penetration 22 is illuminated by a light source 23 arranged in front of it. The light rays following in accordance with the contour variation 5 and passing through the transparent part 6 of the data carrier 1 impinge on a photoelectrical unit 3 which is provided behind it and which converts the intensity of the respective incident volume of light into correspondingly large electrical values. |
200 |
PULSED FEEDBACK CIRCUIT FOR AN OPTO-ELECTRONIC DETECTOR |
GB7849449 |
1978-12-21 |
GB2039183B |
1983-01-06 |
|
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