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JP2518021B2 |
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JP2518521B2 |
PURPOSE: To provide an optical modulator for compensating the self phase modulation of an optical fiber over the wide range of transmission light intensity and transmission distance. CONSTITUTION: An inputted intensity modulation light 1...
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JPH08179390A |
PURPOSE: To superpose a monitoring and controlling low frequency signal on a main signal with a relatively simple constitution without using plural optical modulators. CONSTITUTION: This device is provided with a light source 31 sending ...
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JP2514712B2 |
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JPH08171110A |
To attain the demultiplexing of wavelength by a photoelectron device integrated on a semi-insulated board, in relation to reception. This device includes one or more adapters T integrated on a semi-insulated board via single epitaxial pr...
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JPH08171109A |
PURPOSE: To provide an optical frequency arrangement method capable of previously setting the frequency band occupied by the entire channel and lessening the influence of crosstalks by four light wave mixing with an optical transmission ...
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JPH08160481A |
PURPOSE: To make a frequency transformation to be performed in a wide band and also in a form in which sidebands are not present by providing an input switch, a wavelength plate rotary type optical frequency transformation element and an...
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JPH08160476A |
PURPOSE: To provide an optical wavelength conversion element capable of not only converting wavelengths merely in the fixed direction but converting the wavelength of the converted light to the wavelength of the light before conversion a...
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JP2509295B2 |
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JP2509332B2 |
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JP2505610B2 |
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JPH08146479A |
PURPOSE: To realize an optical wavelength conversion circuit of a wide variable wavelength region at a high speed and an optical delay compensation circuit capable of continuously controlling a delay quantity according to wavelengths and...
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JP2500363B2 |
PURPOSE: To obtain short pulse light with easily controllable pulse width by filling two kinds of stimulated scattering media varying in transient response time into a medium container and generating Stokes light shortened in the pulse w...
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JPH08125637A |
PURPOSE: To realize the reception method of a polarized plane modulation light in which a modulation output is obtained without fail even when an analyzer is fixed and the receiver for it. CONSTITUTION: A frequency multiplex polarized pl...
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JPH08504281A |
PCT No. PCT/DE93/00769 Sec. 371 Date Jan. 25, 1995 Sec. 102(e) Date Jan. 26, 1995 PCT Filed Aug. 24, 1993 PCT Pub. No. WO94/06053 PCT Pub. Date Mar. 17, 1994An integrated acoustooptical component for frequency-shifting optical frequencie...
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JPH08114823A |
PURPOSE: To provide an information read-out device capable of reading out information without almost inflicting a loss on a transmitting pulse modulation signal. CONSTITUTION: A light amplifier 4 is provided in the route of an optical fi...
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JPH0886991A |
PURPOSE: To attain long distance transmission even in an optical fiber transmission line with large spectrum spread by moving a central wavelength of a rise part of an optical pulse to a long wavelength side and moving the central wavele...
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JPH0833564B2 |
PCT No. PCT/GB86/00252 Sec. 371 Date Jan. 5, 1987 Sec. 102(e) Date Jan. 5, 1987 PCT Filed May 9, 1986 PCT Pub. No. WO86/06849 PCT Pub. Date Nov. 20, 1986.An optical homodyne detection system employs the phenomenon of stimulated Brillouin...
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JPH0833565B2 |
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JPH0831648B2 |
A method and apparatus for locking the frequencies of a number of first beams of coherent radiation from respective sources (17) are disclosed. Typically, the sources (17) will form local oscillators in respective transmitters (1). The a...
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JPH0882816A |
PURPOSE: To provide an optical frequency conversion method by which a conversion operation having no dependency on polarized waves is made possible in frequency conversion using four light waves mixing of a semiconductor optical amplifie...
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JPH0828682B2 |
A polarization independent coherent lightwave detection arrangement is disclosed which utilizes an optical hybrid (11) including a single polarization beam splitter (12) and a set of three polarization maintaining optical couplers (one i...
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JPH0827472B2 |
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JPH0824256B2 |
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JPH0821901B2 |
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JPH0856058A |
PURPOSE: To provide an interferrometer semiconductor laser which reduces a coupling loss and further has no adverse effect upon the filtering function of laser. CONSTITUTION: Plural independently controllable segments 1-4 and a coupling ...
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JPH0854586A |
PURPOSE: To provide an optical frequency sweep high in coherency, speed and precision by installing an external modulator which modulates the output light of a laser light source and a drive circuit which supplies frequency-swept driving...
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JPH0817351B2 |
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JPH0843868A |
PURPOSE: To provide a wavelength converter which converts signal light of a certain wavelength to signal light of another wavelength, has no dependency on polarization, is capable of executing incidence and emission of the signal light f...
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JPH0846300A |
PURPOSE: To shift a wavelength in a semiconductor structure with a quantum well by inducing mutual diffusion by the layer of a dielectric material that is maintained in a condensed state while being in contact with the upper surface of t...
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JPH0843648A |
PURPOSE: To decrease the driving voltage of an optical waveguide type controlling device for polarized light without changing the size of the crystal substrate to be used. CONSTITUTION: Two optical waveguides 11, 12 are formed on a x-cut...
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JPH0843869A |
PURPOSE: To enable reading out of control signals from input signal light without affecting a main signal system of a wavelength converter which converts the signal light of a certain wavelength to signal light of another wavelength. CON...
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JPH0810849B2 |
An optical communications system for providing wavelength division multiplexed communications with high spectral channel density and increased sensitivity and selectivity through coherent detection utilizes a fixed frequency source for i...
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JPH087355B2 |
An optical harmonic generator is provided which is capable of deriving a harmonic having a frequency which is an integral multiple of that of incident light (1) by using a nonlinear optical crystal (6), and which is used to obtain a lase...
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JPH087356B2 |
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JPH0822043A |
PURPOSE: To prevent high light insertion loss by providing the above circuit with an electric/optic signal converter which generates a light signal and an optical amplifier which is inputted with the light signal and high frequency signa...
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JPH083596B2 |
An acoustic wave is propagated colinearly with the optical signals in an optical fiber (330) to cause coupling of an optical signal in one propagation mode of the optical fiber (330) to the other propagation mode in the optical fiber (33...
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JPH08500450A |
The object of the invention is to provide a method which makes it possible to determine the correlation between two optical signals, which makes it possible to correlate two optical signals, without using a crystal element which is assoc...
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JPH086085A |
PURPOSE: To provide an optical signal receiver with which high-speed processing is made possible with relatively simple constitution by constituting a more specific processing means of observed interference patterns effective for applica...
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JPH07121140B2 |
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JPH07120979B2 |
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JPH07120835B2 |
Disclosed is an optical integrated circuit for heterodyne detection. The optical integrated circuit comprises: a semiconductor substrate; an active region of a semiconductor laser; two optical waveguides; a photo detector; and an optical...
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JPH07117669B2 |
A superfluorescent broadband fiber laser source comprises a fiber doped (108) with laser material coupled to a multiplexing coupler (104). In the preferred embodiment, a source (100) of pumping illumination provides pumping light to the ...
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JPH07318998A |
PURPOSE: To obtain an economical visible light source device excellent in responsiveness to a signal, having high convergence and high intensity of emitted light, generating a small amt. of heat and ensuring a high degree of freedom of d...
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JPH07111488B2 |
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JPH07109464B2 |
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JPH07109994B2 |
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JPH07104535B2 |
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JPH07104539B2 |
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JPH07297475A |
PURPOSE: To obtain a crystal phosphor thin film of a low-loss highly oriented up-conversion phosphor, by using a thin film of a specified barium fluoride material deposited at a low temperature which is higher oriented, as an up- convers...
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