Japan, Japan
Japan, Japan

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Provided is a semiconductor optical device, an arrayed semiconductor optical device, an optical module having a structure to reduce the parasitic capacitance as well as a high design degree of freedom and having a multilayer structure in which a semi-insulating substrate, a first semiconductor layer having one conductive type, an active layer having light emission function, a second semiconductor layer having the other conductive type, an insulating layer, and a conductive layer are stacked in order from the bottom. The multilayer structure includes a light emitting structure, a first electrode structure, and a second electrode structure. In the semi-insulating substrate and the first semiconductor layer, a first grove which separates the second electrode structure from a remaining portion and approaches the second electrode structure with a non-linear shape rather than a linear shape in its entirety is formed.


Patent
Oclaro Japan Inc. | Date: 2016-11-15

An optical module includes: a photonic device emitting or receiving a light wave; an optical waveguide for transmitting the light wave; a lens focusing the light wave; a mirror for changing a traveling direction of the light wave to optically couple the photonic device with the optical waveguide; a manipulation lever for manipulating an orientation of the mirror; a support spring for supporting the mirror; and a substrate integrated with the mirror, the manipulation lever, and the support spring. The support spring couples the mirror with the substrate so as to allow the mirror to change the orientation thereof with movement or rotation along at least two axes. The manipulation lever extends from the mirror in a direction in which the manipulation lever avoids approaching the optical waveguide.


Patent
Oclaro Japan Inc. | Date: 2016-11-01

A first conductive layer includes a first signal wiring including, at a position except for an end portion, a wide portion having a width wider than that of the other portion. A second conductive layer includes a signal electrode electrically continuous with the end portion of the first signal wiring, a first ground plane overlapping the wide portion, and a ground terminal. A third conductive layer includes a second signal wiring including an end portion overlapping and bonded to the signal electrode, and a ground electrode overlapping and bonded to the ground terminal. A fourth conductive layer includes a second ground plane. The second ground plane includes a through hole overlapping the end portion of the second signal wiring. A fifth conductive layer includes a third groundplane. The third groundplane overlaps the end portion of the second signal wiring inside the through hole.


Patent
Oclaro Japan Inc. | Date: 2016-03-17

An optical transmission module includes: a package; a plurality of light-emitting elements each emitting light in the interior of the package; a beam splitter splitting the light into transmitted light and split light; a plurality of light-receiving elements each including a light-receiving surface on which the split light is incident in the interior of the package, for monitoring light outputs of the plurality of light-emitting elements; and a first light-shielding film provided between the plurality of light-emitting elements and the beam splitter and including a plurality of first holes for the light to propagate to the beam splitter, wherein the plurality of light-receiving elements are disposed with the light-receiving surfaces facing the beam splitter.


Patent
Oclaro Japan Inc. | Date: 2016-03-18

An electrical interface includes an insulating body, first electrodes, and second electrodes. The insulating body includes a first front edge surface and a second front edge surface facing in a direction along a transmission direction of an optical signal at an optical interface and having different heights. The first electrode and the second electrode are provided on the insulating body so as to have a thickness from the first front edge surface and the second front edge surface in a direction of the height. A first flexible wiring board and a second flexible wiring board include a first area and a second area extending in directions along the first front edge surface and the second front edge surface, respectively, of the insulating body, and include, in the first area and the second area, first pads and second pads electrically connected with the first electrodes and the second electrodes.


Provided are a semiconductor light receiving device, an optical receiver module, and a manufacturing method thereof in which characteristics of the device are improved when the device has a structure in which a mesa structure including layers formed of a common material is buried by a buried layer. The semiconductor light receiving device includes the mesa structure including the layers formed of a commonmaterial, the layers including an absorbing layer, the mesa structure being buried by the buried layer formed so as to surround side surfaces of the mesa structure. The mesa structure has a cross section having a forwardly tapered portion and a reversely tapered portion.


Patent
Oclaro Japan Inc. | Date: 2016-02-26

A flexible wiring board includes a conductive film provided on one surface of a substrate. The conductive film includes a plurality of pad portions to which a plurality of connection electrodes are respectively bonded with solder, and a wiring portion extending in a direction crossing a row in which the plurality of pad portions are arranged. The plurality of pad portions include a terminal portion electrically connected with the wiring portion, and at least two land portions located on both sides of the terminal portion while avoiding electrical connection to the wiring portion. The solder includes land solder portions respectively overlaid on the at least two land portions and a terminal solder portion overlaid on the terminal portion. The land solder portion has a shape extending longer than the terminal solder portion along a direction in which the wiring portion extends from the connection electrode corresponding thereto.


Patent
Oclaro Japan Inc. | Date: 2016-02-26

The optical transmission module, which is configured to input differential signals including a positive-phase signal and a negative-phase signal, includes: a laser oscillator configured to output laser light; an optical modulator configured to modulate the laser light based on the positive-phase signal; a negative-phase terminating resistor configured to terminate the negative-phase signal; a Peltier device including a first region and a second region in which heat is exchanged; a substrate mounted to the first region so that heat is conducted to the first region; and a package which is hermetically sealed, the laser oscillator and the optical modulator being mounted on the substrate so that heat is conducted to the first region, the negative-phase terminating resistor being arranged outside of the substrate so as to avoid conduction of heat to the first region.


Patent
Oclaro Japan Inc. | Date: 2016-06-06

Preferable simultaneous achievement of the target characteristics with respect to both of the modulation bandwidth and the extinction ratio in the optical intensity modulation using the electro-absorption optical modulator is realized with a simple circuit configuration. The modulator integrated semiconductor laser element includes a plurality of EA modulators disposed in series in an optical signal path, and each adapted to absorb light in accordance with an applied voltage. The modulator driver for supplying the EA modulator with the applied voltage is provided for each of the EA modulators. The plurality of modulator drivers generates the applied voltage common to the plurality of EA modulators in accordance with a control signal. The modulator lengths of the plurality of EA modulators are set so that the closer to the light source the EA modulator is, the shorter the modulator length is.


In order to prevent non-uniformity in emission wavelength among different sites along an optical axis direction, provided is a resonator portion including: a waveguide which includes a first area and a second area being adjacent to the first area; and diffraction gratings formed along an optical axis direction. The effective refraction index in the first area is larger than the one in the second area, and the thickness in the first area is larger than the one in the second area. A pitch at the adjacent diffraction gratings at a boundary between the first area and the second area is narrower both than pitches of the diffraction gratings that are formed in the first area and than pitches of the diffraction gratings that are formed in the second area.

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