An optical fiber transmission system with a laser beam splitting and combining device includes a laser beam splitting and combining device receiving a laser beam from a laser device and projecting the laser beam onto a target through an objective lens. The laser beam splitting and combining device has a beam splitter, two transmitters, two receivers and a beam combiner. When the beam splitter divides the received laser beam and transmits the divided laser beams to the transmitters, the transmitters transmit the divided laser beams to the receivers through two optical fibers. The receivers send the divided laser beams to the beam combiner for the beam combiner to combine the divided laser beams into an output laser beam projected on the target through the objective lens. Given the optical transmission path of the laser beam splitting and combining device, the laser transmission distance can be extended.

Methods and systems for forming a fiber assembly are provided herein. A method comprises removing an excess portion from an end of an optical fiber to form a severed end. The optical fiber defines an optical variation portion that includes an optical pathway defining a varying output characteristic of optical signals depending on a position therealong. When the severed end is formed, the position of the severed end along the optical variation portion defines the output characteristic of optical signals therefrom. The method further includes positioning the optical fiber with the severed end onto a film disposed on a surface of a substrate and placing a fixture thereover. The method further includes applying heat to the film through an opening of the fixture to create a bond between the optical fiber and the surface of the substrate.

An optronic transceiver module is disclosed. The optronic transceiver module includes an m to n main optical coupler capable of splitting a downlink signal into n downlink optical signals of the same power to be transmitted in n optical fibres, a first uplink optical coupler capable of splitting an uplink signal into two optical signals split according to a predetermined reference power ratio and delivering a low-power signal and a high-power signal, a first power measurement photodiode delivering a power measurement associated with a first low-power signal, the main optical coupler being capable of aggregating the high-power optical signal and a second uplink optical signal representative of an optical signal received via a second optical fibre, into an aggregated uplink optical signal.

An optical fiber transmission system with a laser beam splitting and combining device includes a laser beam splitting and combining device receiving a laser beam from a laser device and projecting the laser beam onto a target through an objective lens. The laser beam splitting and combining device has a beam splitter, two transmitters, two receivers and a beam combiner. When the beam splitter divides the received laser beam and transmits the divided laser beams to the transmitters, the transmitters transmit the divided laser beams to the receivers through two optical fibers. The receivers send the divided laser beams to the beam combiner for the beam combiner to combine the divided laser beams into an output laser beam projected on the target through the objective lens. Given the optical transmission path of the laser beam splitting and combining device, the laser transmission distance can be extended.

A compact configuration of a multiport fiber array and a multi-surface optical lens constitutes a low modal noise multimode fiber optical power splitter. In a digital optical system, modal noise manifests itself in modal dependent intensity noise and modal dependent timing jitter. A compact two-part end coupling design improves both properties and is more cost effective, making it a suitable solution for future high bit rate optical system applications.

An optical signal isolation device comprising a common port, an isolated diagnostic port, an integrated circulator comprising an input circulator fiber, an output circulator fiber, and a fiber-to-fiber optical coupler configured to couple an isolated optical signal propagating along the input circulator fiber to the output circulator fiber for propagation along the output circulator fiber, a multi-fiber alignment body that secures at least portions of each of the multi-signal fiber, the isolated diagnostic signal fiber, the input circulator fiber, and the output circulator fiber, and a wavelength-selective optical assembly including an optical signal filter, fiber-to-filter focusing optics, and a communications signal reflector. The integrated circulator and the wavelength selective optical assembly are configured such that the communications component is retro-reflected back to the common port and the diagnostic component is passes out of the isolated diagnostic port.

A front light unit of an embodiment comprises: a light source unit for an image display device; a light guide unit for guiding light incident from the light source unit and outputting the guided light to a display unit; and a holographic optical element unit being opposite to the display unit and disposed on the light guide unit. Therefore, the present invention can adjust the direction of light output from the light source unit and increase the quantity of light transferred to the display unit, using a pattern formed in the holographical optical element unit, thereby improving the efficiency of light supplied from the light source unit and reducing the sizes of the light unit and the display device including the same.

The optical receptacle according to the present invention comprises: a first optical surface, a second optical surface, an optical separating part and a third optical surface. The optical separating part includes a first dividing reflection surface for causing a part of the emittance light incident on the first optical surface to be internally reflected toward the second optical surface as the signal light, and a second dividing reflection surface for causing a part of the emittance light incident on the first optical surface to be internally reflected toward the third optical surface as the monitor light. The entire light path between the first optical surface, the optical separating part, and the second optical surface is located inside the optical receptacle.

A double mirror (Mi) of a light-guiding device of the present invention is made of (i) a first mirror (Mi1) that is mounted on a top surface of a base plate (B) and has a reflective surface (S1) entering an input beam reflected by the reflective surface (S1) and (ii) a second mirror (Mi2) that is mounted on a top surface of the first mirror (Mi1) and is a prism having a reflective surface (S2) reflecting the input beam that has been reflected by the reflective surface (S1), the input beam reflected by the reflective surface (S2) being totally reflected inside the prism.

An optical system, comprising: (i) multiple input optical fibers; (ii) an optical mode multiplexer/demultiplexer coupled to said input optical fibers with, said optical mode multiplexer/demultiplexer comprising a plurality of metamaterial structures having length and forming at least one stage of metamaterials, the at least one stage of metamaterials is being situated on a surface of the optical mode multiplexer/demultiplexer facing the input optical fibers, and the at least one stage of metamaterials is oriented at angles between 60 and 120 degrees relative to the axis of the input fibers; and the metasurfaces are structured to receive a first optical signal having a first mode from at least one of said multiple input optical fibers and convert the first mode to a different mode.