The present disclosure provides a cable assembly and a cable indication system. The cable assembly includes a first cable, a second cable, a first connector, a second connector, and a third connector. The first cable includes a jacket defining a first cavity and a second cavity, the first cavity includes a light guide extending through the first cavity, and the second cavity has an open end. The second cable is encased by the first cable in the second cavity, and the second cable extends through the second cavity. The first connector is electrically coupled to a first end of the first cable and includes a first interface for connecting with a first device. The second connector includes a second interface for connecting with the first connector. The third connector includes a third interface for connecting with a second device.

An optical communication module outputting light directly into an optical fiber and not requiring lenses or other light-guiding elements includes a printed circuit board, an optical-signal transmitter mounted on the printed circuit board and including a light emitting element. An optical fiber is directly connected to the light emitting element, and an optical-fiber connector is connected to the optical fiber. The light emitting element emits light beams into the optical fiber. A method of manufacturing such module is also disclosed.

A three-dimensional display consists of a rotating body of optical fibers. Each fiber receives light on first end from a stationary light source, and re-emits the light on the second end when the light source is aligned during a time interval with first end of the fiber. During one revolution, each re-emitted light occupy a unique three-dimensional coordinate, thus all re-emitted lights form a three-dimensional image. Three-dimensional still or moving images are obtained by successive images produced on successive revolutions of the body of optical fibers.

An excitation light irradiation device includes a substrate having a color center. The color center is excited by an excitation light incident to the substrate. The substrate includes first and second reflection surfaces facing each other, and first and second end surfaces facing each other. When the excitation light enters into the substrate, the incident excitation light travels from the first end surface to the second end surfaces while repeatedly reflecting between the first and second reflection surfaces. The second end surface is inclined. The second end surface reflects the incident excitation light so as to cause the incident excitation light to be emitted from one of the first and second reflection surfaces.

The invention described herein pertains to the structure and formation of an optical device that includes a planar laser and a waveguide. The planar laser has a large lateral QW-containing layer and a tapered section in a transition portion of the device structure that enable low diode leakage currents and facilitate transition of the optical signal from the laser to a transition waveguide, and in some embodiments, to a dilute waveguide.

A semiconductor package includes a first electric integrated circuit component, a second integrated circuit component, and a first plasmonic bridge. The second electric integrated circuit component is aside the first electric integrated circuit component. The first plasmonic bridge is vertically overlapped with both the first electric integrated circuit component and the second electric integrated circuit component. The first plasmonic bridge includes a first plasmonic waveguide optically connecting the first electric integrated circuit component and the second electric integrated circuit component.

Methods and systems for split voltage domain receiver circuits are disclosed and may include amplifying complementary received signals in a plurality of partial voltage domains. The signals may be combined into a single differential signal in a single voltage domain. Each of the partial voltage domains may be offset by a DC voltage from the other partial voltage domains. The sum of the partial domains may be equal to a supply voltage of the integrated circuit. The complementary signals may be received from a photodiode. The amplified received signals may be amplified via stacked common source amplifiers, common emitter amplifiers, or stacked inverters. The amplified received signals may be DC coupled prior to combining. The complementary received signals may be amplified and combined via cascode amplifiers. The voltage domains may be stacked, and may be controlled via feedback loops. The photodetector may be integrated in the integrated circuit.

There are included a CAN package (2) having a stem (22) and lead pins (23a and 23b) protruding from the stem (22), and a board (3) having pads (33a and 33b) for connecting lead pin. The CAN package (2) has a slot (222) provided in a surface of the stem (22) from which the lead pins (23a and 23b) protrude. One end of the board (3) is inserted into the slot (222), and the pads (33a and 33b) for connecting lead pin are electrically connected to the lead pins (23a and 23b).

A package structure including a plurality of first dies and an insulating encapsulant is provided. The plurality of first dies each include a first waveguide layer having a first waveguide path of a bent pattern, wherein the first waveguide layers of the plurality of first dies are optically coupled to each other to form an optical route. The insulating encapsulant encapsulates the plurality of first dies.

An optical transceiver has a first optical waveguide connected to an input/output port for signal light, a second optical waveguide configured to input and output test light, an optical circuit configured to perform optical-to-electrical conversion or electrical-to-optical conversion, and an optical switch provided between the optical circuit and the first and the second optical waveguides and configured to switch between a first path connecting the optical circuit to the first optical waveguide and a second path connecting the optical circuit to the second optical waveguide, wherein the optical switch is configured to select the second path in an ON state with an electrical voltage being applied to the optical switch, and select the first path in an OFF state without the electrical voltage being applied to the optical switch.