Abstract: A resonant optical modulator comprises a transmission fiber-optic waveguide, a circumferential-mode optical resonator transverse-coupled thereto, a modulator optical component transverse-coupled to the circumferential-mode resonator, and a modulator control component. A control signal applied to the modulator optical component through the modulator control component alters the round-trip optical loss of the circumferential-mode resonator, thereby altering the transmission of a resonant optical signal through the transmission fiber-optic waveguide. The modulator optical element may comprise an open waveguide or a closed waveguide (i.e., resonator). The resonator round-trip optical loss may be altered by altering the optical absorption/scattering of the modulator optical component, by altering the amount of optical power transfer between the resonator and the modulator optical component, or by altering an optical resonance frequency of a resonant modulator optical component.

Abstract: There is provided a material which can give a high elasticity and heat resistance to an optical waveguide member by photo-curing while maintaining transparency in a near infrared region and further makes it possible to use a film forming process by a spin coating method and a process for producing a waveguide by photolithograph, to obtain a waveguide having a large area and to produce an optical waveguide having reduced water absorption, and further there can be provided an optical waveguide member and an optical waveguide device. Namely, there are provided a fluorine-containing optical waveguide material comprising a curable fluorine-containing prepolymer (I) which is a non-crystalline polymer having a fluorine content of not less than 25% by weight and has a carbon-carbon double bond in a polymer side chain and/or at an end of a polymer trunk chain, an optical waveguide member which is a cured article of the optical waveguide material and an optical waveguide device comprising the optical waveguide member.

Abstract: A low-noise optical frequency converter uses a predetermined microwave electric signal to modulate an input light wave and output a light wave that includes a first-order upper-sideband or lower-sideband and a third-order lower-sideband or upper-sideband. The frequency converter modulates a light wave identical to the input light wave with a signal having a frequency that is three times that of the microwave signal, to form a first light wave having a first-order lower-sideband or upper-sideband. The first light wave is mixed with a second light wave having a first-order upper-sideband or lower-sideband and a third-order lower-sideband or upper-sideband, with a phase of the third-order lower-sideband or upper-sideband reversed to a phase of the first light wave, thereby suppressing third-order sidebands.

Abstract: There is provided an attenuator device having a simple configuration and capable of selecting an output of beam of an arbitrary wavelength range from a plurality of output ports. The attenuator device comprises: a plurality of output fibers (1-3 and 1-5) having an end surface serving as an output port; discarding optical fibers (1-2 and 1-4) having an end surface serving as a discarding port and each arranged adjacently to the output optical fiber; a diffraction grating (5) which diffracts an incident beam into various directions according to the wavelength thereof; and a micro mirror array (7) which adjusts the output direction of the diffracted beam for each of the wavelength ranges output from the diffraction grating (5). The micro mirror array (7) adjusts the output direction of the diffracted beam so that a part of the diffracted beam may be output to the output port while the rest being output to the discarding port.

Abstract: A signal light pulse to be converted into a two-dimensional space signal and a reference ultra-short light pulse are directed to a dispersion device, a second-harmonic is generated by introducing a one-dimensional frequency light distribution obtained by a one-dimensional Fourier transform lens, the second-harmonic is then subjected to time-to-space conversion through a one-dimensional Fourier transform lens so as to obtain a light wave distribution, and the light wave distribution is then subjected to filtering by a time-frequency filter provided on a filter plane of a one-dimensional space frequency filtering optical system and is further converted into a two-dimensional space signal corresponding to a time-frequency expanded two-dimensional light distribution which represents a relation between time and frequency of the signal pulse light.

Abstract: A fiber lens includes a graded-index lens, a single-mode fiber disposed at a first end of the graded-index lens, and a refractive lens having a hyperbolic or near-hyperbolic shape disposed at a second end of the graded-index lens to focus a beam from the single-mode fiber to a diffraction-limited spot.

Abstract: Working with an information system operating an application—are an imager, a coded data source, and a computer-readable signal-bearing medium signal (FIG. 1, 11, 12, 13, 14, 15, 16, 17, 18, 21, 22, 23, 24, 25, 26, 27, 31, 32, 33, 41, 42, 43, 44, 45, 51, 52, 53, 54, 55, 91, 92, 93) connected to the information system where light from the data source—which represents data—is detected by the imager which inputs a signal—which represents the light—to the information system; where a use component of the medium causes the data to be made available to the application with the application being specified by the data; and where: the image can be from a plurality of imagers signal connected to the information system; the coded data source can be from a plurality of coded data sources; the application can be from a plurality of applications operated by the information system; and the medium can have a plurality of components which cause uses of data, management of imagers, and output signals.

Abstract: Devices and systems having one or more of the following components: a compliant pillar with a modified tip surface (non-flat tip) and a corresponding compliant socket; an optical/electrical I/O interconnect and a corresponding compliant socket; a lens/waveguide optical pillar, a polymer bridge, and an L-shaped pillar, are described herein. In addition, methods of making these components and methods of using these components are disclosed herein.

Abstract: An apparatus includes an optical waveguide and an optical filter positioned to receive light from the optical waveguide. The optical waveguide includes a sequence of alternating first and second stripes. The sequence runs along a propagation direction in the optical waveguide. The first and second stripes are formed of different polarization states of a group III-nitride semiconductor. The optical filter removes light of a preselected frequency.

Abstract: A method of moving a carbon nanotube which is attached by one end thereof, to a junction on a substrate. The method comprises applying a charge to the carbon nanotube, and providing a repelling force to an adjacent structure from the carbon nanotube to which the charge has been applied.

Abstract: The optical fiber holder of the coupling device has a top, a bottom, and narrow side faces between the top and the bottom. Intermediate faces are formed at the transitions between the narrow side faces and the top and the bottom. A receptacle into which the holder is inserted axially has internal contact areas which are in contact with the intermediate faces without play.

Abstract: A wavelength converter for generating a wavelength tunable laser optical source in itself is disclosed. The wavelength converter includes a first semiconductor optical amplifier for generating an optical noise, generating and outputting a first optical source by amplifying the generated optical noise if an external current is applied, first and second distributed Bragg reflectors for reflecting only a component of a specified wavelength range among components of the optical noise and applying the reflected component to the first semiconductor optical amplifier, and a second semiconductor optical amplifier for receiving an optical source divided from the optical source reflected by and outputted from the first distributed Bragg reflector and an input data optical source, generating and outputting a second optical source by changing a phase of the divided optical source according to a digital signal from the input data optical source.

Abstract: An optical apparatus comprises an optical waveguide, a bottom surface and walls formed on a first substrate and defining a detection volume with an upper opening, and a photodetector active area formed on a photodetector substrate. The bottom surface may be provided with a reflective coating. The waveguide is positioned relative to the detection volume so that light emerging from an end face of the waveguide is received within the detection volume. The detector substrate is mounted on the first substrate so as to cover the upper opening of the detection volume with the active area exposed to the detection volume. The optical waveguide may be formed on the first substrate along with the detection volume, or the optical waveguide may be formed on a separate waveguide substrate, and the waveguide substrate assembled with the first substrate.

Abstract: Tunable optical filters using whispering-gallery-mode (WGM) optical resonators-are described. The WGM optical resonator in a filter exhibits an electro-optical effect and hence is tunable by applying a control electrical signal.

Abstract: Input light is split by an input-light splitter into first split light and second split light. A multiplex-interference portion performs multiplex interference of the first split light and the second split light to generate intensity-modulated light having a first wavelength. A phase modulation portion is fed with the intensity-modulated light and continuous wave light having a wavelength equal to a second wavelength, and performs cross-phase modulation of the continuous wave light in accordance with phase modulation of the input light.

Abstract: A wavelength selective manipulation device and method including: at least a first optical input port for inputting an optical signal including a plurality of wavelength channels; a first wavelength dispersing element for angularly dispersing the wavelength channels of the optical signal into angularly dispersed wavelength signals; an optical power element for focussing in the angularly dispersed dimension the angularly dispersed wavelength signals into a series of elongated spatially separated wavelengths bands; a spatial manipulation element for selectively manipulating the spatial characteristics of the spatially separated wavelength bands to produce spatially manipulated wavelength bands.

Abstract: A method and apparatus for controlling an optical gain difference and an optical phase difference in a semiconductor optical amplifier—Mach-Zehnder interferometer (SOA-MZI) wavelength converter having two arms and that outputs probe output signals POH and POL, corresponding to pump input signals of logic high and logic low, respectively. The controlling includes detecting an optical power level of the output probe signals and controlling at least one of an optical gain difference between the two arms and an optical phase difference between the two arms in accordance with a detected optical power level of the probe output signal.

Abstract: The present invention provides a light guide, a line-illuminating device, and an image-scanning device that provide excellent uniformity in the amount of light produced. A light-reflecting portion comprised of spherical concave surfaces becomes a reflecting surface having spherical convex surfaces when it is seen from the inside of the light guide. Even when the incident angle of light from the light source unit is slightly offset, the reflection angle in spherical convex surfaces significantly changes, and light is reflected uniformly toward the upper surface serving as a light-emitting surface. In particular, when the fine spherical concave portions of the light-reflecting portion have a small depth, the incident light from the end surface is reflected toward the upper surface, serving as a light-emitting surface, and both side surfaces without reflecting back to the light-emitting unit side, so that uniform reflection can be achieved.

Abstract: The present invention generally provides systems and methods for distribution of radiation among a plurality of optical channels, each of which can include a non-linear optical element. An optical system of the invention can include a source for generating radiation and an optical time-division multiplexer that can deflect, at any given time interval, the radiation into one of a plurality of optical channels.

Abstract: A light-emitting module structurally suspended between a pair of spaced apart electrical conducting wires wherein each of the wires has selected portions that are electrically insulated from the module. The light emitting module, in concert with the electrical conducting wires, provides structural support for the light emitter portion of the light emitting module via the connections to the insulated and non-insulated portions of the electrical conducting wires. A plurality of light emitting modules may be ganged together in series, parallel or series-parallel electrical configurations to produce chains of light emitting modules. The chains of light emitting modules produce selected or desired illumination depending on the quantity of light emitting modules being ganged together.