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WO/2013/068516 |
The present invention relates to a photomixer for generating terahertz electromagnetic radiation in response to illumination by a time-modulated optical signal. The photomixer (300) comprises a carrier substrate (310) with a plurality of...
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WO/2013/024818 |
This frequency shifter (10) comprises a substrate (20) having a polarization reversal structure, a modulating electrode (30) provided on the surface of the substrate (20), and a waveguide (40) provided to the substrate (20). Supplying an...
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WO/2013/020407 |
Proposed are a swing low-coherence interference displacement demodulation method with high signal to noise ratio and two demodulation devices. The displacement sensing method is to form a certain optical path difference using the reflect...
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WO/2013/013695 |
An optical switch (10) comprising: a first signal input (12) to receive an OOK modulated optical traffic probe signal having a first wavelength and carrying communications traffic and an optical gate probe signal having a second waveleng...
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WO/2012/153856 |
In the present invention, in order to switch the wavelength of local light immediately following the switching of the wavelength of signal light, a coherent optical receiver is provided with the following: a signal light branching means ...
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WO/2012/153857 |
In order to provide a high-performance optical mixer having good yield, an optical mixer comprises: a first light branching means that branches a first input light into a plurality including a first output light and a second output light...
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WO/2012/147324 |
[Problem] To provide an optical frequency conversion method and device with which an output light wave of the desired frequency component can easily be extracted by removing components other than the desired high-frequency component with...
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WO/2012/133770 |
An optical waveguide-type polarization separation element formed on a substrate and provided with an input optical branching unit, an output optical multiplexing unit, a first arm waveguide and a second arm waveguide which connect the in...
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WO/2012/132907 |
An optical waveguide circuit provided with: a first and second input optical waveguide to which a first beam of light and a second beam of light are inputted; a first polarization beam splitter connected to the first input optical wavegu...
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WO/2012/124883 |
The present invention relates to a terahertz wave modulator. The terahertz wave modulator includes: a semiconductor substrate; a terahertz modulation layer including an organic-material layer disposed on the semiconductor substrate; and ...
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WO/2012/118215 |
In order to appropriately split a polarized multiplexed BPSK signal without using a training sequence and also without lowering resistance to frequency offsets, a light receiver of the present invention is provided with: a coherent light...
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WO/2012/075391 |
A photoluminescent composition ("phosphor ink") comprises a suspension of particles of at least one blue light (380nm to 480nm) excitable phosphor material in a light transmissive liquid binder in which the weight loading of at least one...
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WO/2012/058395 |
Particular embodiments of the present disclosure relate systems and methods for evaluating visible light sources. According to one embodiment, a method of evaluating a visible light source including a semiconductor laser having a gain se...
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WO/2012/021968 |
A device and related fabrication method is provided for an organic/inorganic hybrid optical amplifier with a function of converting infrared light to visible light. The hybrid device integrates an inorganic heterojunction phototransistor...
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WO/2012/014847 |
Provided is a method for shielding ultraviolet radiation and intensifying visible light at low cost and without using any rare metal, the method allowing ultraviolet radiation to be shielded or removed and visible light to pass through a...
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WO/2011/155391 |
Provided is an optical 90-degree hybrid circuit which is compact and reduced in manufacturing costs. The optical 90-degree hybrid circuit (1) is provided with a 90-degree hybrid circuit (4), which is formed in a planer lightwave circuit ...
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WO/2011/152202 |
Provided are a PLC-type demodulating delay circuit and a PLC-type optical interferometer that enable the downsizing of PLC chips for various optical-output-waveguide arrangements. In the disclosed PLC-type demodulating delay circuit (1),...
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WO/2011/144460 |
According to a first aspect, the invention relates to a device (1) for generating a continuous wide-band frequency comb, including: an optical fiber loop (3); a continuous laser source (2) providing a laser line at a reference frequency,...
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WO/2011/134562 |
The invention relates to a system for producing a signal having a variably adjustable time position or phase position, comprising at least one light source for producing a first light component (2) having a first wavelength and a second ...
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WO/2011/134562 |
The invention relates to a system for producing a signal having a variably adjustable time position or phase position, comprising at least one light source for producing a first light component (2) having a first wavelength and a second ...
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WO/2011/122538 |
Disclosed is a delay circuit which is for PLC type demodulation and which has a reduced size, allows for increased design flexibility, and can reduce loss. A delay circuit (1) for PLC type demodulation is provided with a planar lightwave...
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WO/2011/122539 |
Disclosed is a delay circuit which is for PLC type demodulation and which is not easily affected by the positional dependence of the polarisation conversion efficiency of a wavelength plate. The circuit can also easily achieve excellent ...
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WO/2011/105324 |
Provided is an optical frequency comb generating device and an optical pulse generating device using the aforementioned with the ability to precisely control the drive conditions of an optical frequency comb, and in which the control-rel...
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WO/2011/105499 |
Disclosed is a laser ultrasonic flaw detector wherein laser light having a single kind of wavelength (λ0) which is emitted from a laser light source (11) is converted by a wavelength shifter (12) to laser light including at least two ki...
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WO/2011/096488 |
This invention is directed to quickly changing the polarization states of a transport signal at the speed of a symbol rate. First, second and third switches are temporally switched to input, as a Y-polarization I-signal, one of an X-pola...
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WO/2011/088249 |
A display system is based on a linear array phase modulator and a phase edge discriminator optical system.
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WO/2011/083748 |
With respect to a coherent light receiving apparatus, a polarization multiplexing light signal, whereupon a first signal is placed upon a first polarized wave light and a second signal is placed upon a second polarized wave light, is pol...
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WO/2011/075964 |
A temperature-compensation interferometer includes a beam splitter (14), first and second mirrors (15, 16), a positive regulating plate (142) and a negative regulating plate (143). The first and the second mirrors (15, 16) and the beam s...
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WO/2011/065702 |
A coupled asymmetric quantum confinement structure (300) comprises first and second quantum confinement structures (302,322), such as quantum wells or quantum dots, where the first and second structures differ in at least one physical di...
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WO/2011/063750 |
An optical demodulator comprises a first reflector (1), a second reflector (2), a third reflector (3), and an optical splitter (4). The first reflector (1) is located at one side of the optical splitter (4), and the second reflector (2) ...
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WO/2011/020961 |
The present invention relates to a device for controlling optical frequency (F1, F2) about a central working frequency (F0). This device comprises a vertical cavity (2) formed of two parallel and partially reflecting walls (3a, 3b), and ...
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WO/2011/011194 |
A rhomb beam splitter (14), rather than a conventional cube, is used in combination with a mirror (22) reflecting both the reflected and transmitted beams to obtain a delay-line interferometer demodulator (10) with a substantially common...
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WO/2011/010469 |
Disclosed is an optical 90-degree hybrid circuit which achieves a reduction in the wavelength dependency of IQ phase difference. Specifically disclosed is an optical 90-degree hybrid circuit configured to be provided with a first branchi...
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WO/2011/004614 |
Disclosed is a light 90-degree hybrid circuit provided with a monitoring function for IQ phase difference. The light 90-degree hybrid circuit is provided with a first demultiplexing optical coupler having two or more first input ports an...
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WO/2011/001679 |
Disclosed is an optical 90 degree hybrid circuit wherein wavelength independence is achieved. The optical 90 degree hybrid circuit is provided with: a first light splitting means, to which a first light beam is input, for splitting the f...
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WO/2010/142313 |
The invention concerns a passive terahertz radiation source configured to emit electromagnetic radiation having frequency in the range of 10 GHz to 50 THz and a method for generating a terahertz radiation. The passive terahertz radiation...
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WO/2010/099104 |
A transform spectrometer implemented on a planar waveguide circuit (PLC), having an input optical signal waveguide carrying an input optical signal to be analyzed; a plurality of couplers, each connected to the input optical signal waveg...
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WO/2010/099104 |
A transform spectrometer implemented on a planar waveguide circuit (PLC), having an input optical signal waveguide carrying an input optical signal to be analyzed; a plurality of couplers, each connected to the input optical signal waveg...
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WO/2010/060859 |
The invention relates to an optoelectronic device for frequency discrimination, characterised in that it comprises: an input for an optical wave pair comprising a first wave at a first frequency (F1) and a second wave at a second frequen...
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WO/2010/036420 |
An optical modulator is provided. The optical modulator includes a ridge- shaped active region comprising a plurality of alternating high and low index layers. The ridge-shaped active region is used to confine a selective optical mode fo...
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WO/2010/032272 |
The invention concerns an optical modulator, comprising an input suitable to receive an optical carrier, a high- frequency microwave input and an output suitable to transmit an optical signal, the optical modulator comprising two Mach-Ze...
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WO/2010/003179 |
The present disclosure provides a method of fabricating a material. The material comprises first and second material components. The method comprises the steps of providing a source of a first material component. Further, the method comp...
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WO/2010/006275 |
The invention relates to light sources and displays incorporating blue laser pumped light sources that provide green light. According to a first aspect of the invention, a green light source includes a semiconductor diode laser (1202) em...
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WO/2009/146561 |
A terahertz radiation transmission and detection system includes a dual mode light source operable in a continuous wave mode and in a pulsed wave mode, wherein the dual mode light source is configured for generating a continuous wave lig...
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WO/2009/131117 |
A first laser beam (1a) and a second laser beam (1b) are introduced into a differential frequency mixing unit so that the two laser beams are overlapped in the differential frequency mixing unit, thereby producing terahertz waves using t...
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WO/2009/104758 |
It is possible to realize a highly effective optical OFDM receiver. Provided is a subcarrier separation circuit which receives an optical OFDM signal formed by two subcarriers A and B and separates subcarrier components. A reception sign...
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WO/2009/081014 |
The invention relates to a wall-opening apparatus that comprises a diversion means for diverting the light flowing therethrough, and a light-energy conversion material that intensifies the light in the visible spectrum.
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WO/2009/081014 |
The invention relates to a wall-opening apparatus that comprises a diversion means for diverting the light flowing therethrough, and a light-energy conversion material that intensifies the light in the visible spectrum.
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WO/2009/022361 |
Disclosed herein is an optical frequency shifter (1) provided with: an electro-optical substrate (3) having a main surface (3a); an optical waveguide structure (2) formed in the substrate (3) and having two waveguide portions (7), which ...
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WO/2009/022361 |
Disclosed herein is an optical frequency shifter (1) provided with: an electro-optical substrate (3) having a main surface (3a); an optical waveguide structure (2) formed in the substrate (3) and having two waveguide portions (7), which ...
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