Abstract: Embodiments herein relate to a method in a network node configured in an optical network for enabling a first unit to connect ad-hoc to a second unit in a system configured for remote radio units and main units. The network node receives a connection request from the first unit over the optical network. The network node establishes a connection, to the first unit, for control data. The network node stores control data regarding the first unit. The control data is retrieved from the first unit over the established connection and wherein the control data enables the first unit to connect/be connected ad-hoc to the second unit for transferring user data over a physical path through the optical network.

Abstract: An electro-optic device, comprising a layer of light-carrying material; and a rib, projecting from the layer of light-carrying material, for guiding optical signals propagating through the device. The layer of light-carrying material comprises a first doped region of a first type extending into the rib, and a second doped region of a second, different type extending into the rib such that a pn junction is formed within the rib. The pn junction extends substantially parallel to at least two contiguous faces of the rib, resulting in a more efficient device. In addition, a self-aligned fabrication process can be used in order to simplify the fabrication process and increase reliability and yield.

Abstract: A supercontinuum optical pulse source provides a combined supercontinuum. The supercontinuum optical pulse source comprises one or more seed pulse sources, and first and second optical amplifiers arranged along first and second respective optical paths. The first and second optical amplifiers are configured to amplify one or more optical signals generated by said one or more seed pulse sources. The supercontinuum optical pulse source further comprises a first microstructured light-guiding member arranged along the first optical path and configured to generate supercontinuum light responsive to an optical signal propagating along said first optical path, and a second microstructured light-guiding member arranged along the second optical path and configured to generate supercontinuum light responsive to an optical signal propagating along said second optical path.

Abstract: A method for reducing loss in a subwavelength photonic crystal waveguide bend is disclosed. The method comprising: forming the subwavelength photonic crystal waveguide bend with a series of trapezoidal shaped dielectric pillars centered about a bend radius; wherein each of the trapezoidal shaped dielectric pillars comprise a top width, a bottom width, and a trapezoid height; wherein the length of the bottom width is greater than the length of the top width; and wherein the bottom width is closer to the center of the bend radius of the subwavelength photonic crystal waveguide bend than the top width. Other embodiments are described and claimed.

Abstract: Embodiments herein relate to a method in a network node configured in an optical network for enabling a first unit to connect ad-hoc to a second unit in a system configured for remote radio units and main units. The network node receives a connection request from the first unit over the optical network. The network node establishes a connection, to the first unit, for retrieving control data. The network node stores control data regarding the first unit. The control data is retrieved from the first unit over the established connection and wherein the control data enables the first unit to connect/be connected ad-hoc to the second unit for transferring user data over a physical path through the optical network.

Abstract: An electro-optic device, comprising an insulating layer and a layer light-carrying material adjacent the insulating layer. The layer of light-carrying material, such as silicon, comprises a first doped region of a first type and a second doped region of a second, different type abutting the first doped region to form a pn junction. The first doped region has a first thickness at the junction, and the second doped region has a second thickness at the junction, the first thickness being greater than the second thickness, defining a waveguide rib in the first doped region for propagating optical signals. Since the position of the junction coincides with the sidewall of the waveguide rib a self-aligned process can be used in order to simplify the fabrication process and increase yield.

Abstract: Embodiments of the present invention disclose a method and a device for processing an interconnected ring in multi-protocol label switching. The method includes classifying to-be-processed services as a single ring service for an original ring and a cross-ring service for an interconnected ring corresponding to the original ring, determining information about a virtual point corresponding to the interconnected ring, creating a virtual channel of the original ring according to the information about the virtual point, using the virtual channel to forward the cross-ring service to the interconnected ring, and processing the single ring service according to a pre-created actual channel of the original ring.

Abstract: An optical integrated circuit formed on a substrate includes a light source, a spot size converter section configured to convert a spot size of light emitted from the light source, a waveguide section connected to the spot size converter section, and an active section connected to the waveguide section, layers sequentially a lower clad layer, core layer, shared layer, and upper clad layer on the substrate, makes a refractive index of the shared layer greater than refractive indices of the lower clad layer and upper clad layer and less than a refractive index of the core layer, and makes the spot size converter section, the waveguide section, and the active section share the shared layer. Accordingly, it is possible to provide an optoelectric integrated circuit by which both a simplification in a manufacturing process and a high efficiency in optical coupling between a light source and a waveguide are achieved.

Abstract: Planar waveguide apparatus provides a waveguide at least partially overlying a passive buried rib waveguide for coupling optical radiation there between. The overlying waveguide has at least one tapered section, the width of the taper determining the degree of coupling between the waveguides at points along the tapered section. The overlying waveguide may have an active core region. The passive buried rib may have one or more unguided sections below electrically driven regions of the active waveguide to avoid parasitic modes and/or may provide a grating for use as a filter or feedback. Variations include a branched passive waveguide for coupling to two or more overlying waveguides and two or more aligned and active overlying waveguides coupling to one passive waveguide, there being a break in a shared core region of the active waveguides to provide electrical isolation between them.

Abstract: An integrated circuit includes a substrate, a metal grating disposed over the substrate, and a waveguide layer disposed over or under the metal grating. The metal grating is arranged to change a propagation direction of an optical signal and the waveguide layer is arranged to guide the optical signal to a desired direction.

Abstract: There are provided an optical interconnection module and an optical-electrical hybrid board using the same to process optical and electric signals on a board at a low transmission loss at high speed in transmitting high-speed optical signals sent and received between chips or between boards in a data processing apparatus. An optical interconnection module has a structure in which an optical signal is emitted from a laser optical source device, propagates the inside of a modulator device, and is deflected by a beam turning structure in the vertical direction of a substrate, an optical signal is incident from the outside of a semiconductor substrate, and transmitted and received at a photo diode provided on the semiconductor substrate, and the optical signals are optically connected to each other through the inside of the semiconductor substrate in the vertical direction of the substrate with the outside of the semiconductor substrate.

Abstract: An optical transmission body includes a substrate having a through hole penetrating therethrough in a thickness direction thereof; a cladding member at least a part of which is positioned to be filled in the through hole, and which has an optical waveguide hole which is positioned inside the through hole and penetrates through the cladding member in a thickness direction thereof and a guide hole portion which is positioned away from the optical waveguide hole and is concave in the thickness direction; and a core member disposed inside the optical waveguide hole.

Abstract: An optical modulator may include a lower waveguide, an upper waveguide, and a dielectric layer disposed therebetween. In one embodiment, the lower waveguide may include a u-shaped region within an optical mode of the light passing through the optical modulator. By conforming the dielectric layer to the surfaces of the u-shaped region, the amount of area of the dielectric layer within a charge modulation region is increased relative to forming the dielectric layer on a single plane. Folding the dielectric layer in this manner may improve modulation efficiency. In one embodiment, the u-shaped region is formed by using ridge structures that extend from an upper surface of the lower waveguide towards the upper waveguide. To aid in lateral confinement of the optical mode, the dielectric layer may be deposited on one side surface of the ridge structures while a different dielectric material is deposited on the opposite side surface.

Abstract: An apparatus includes an optical semiconductor element comprising: a waveguide into which input light is input; a plurality of ring modulators that have different optical perimeter lengths and are optically coupled to the waveguide; and a control unit configured to selectively apply a modulation signal to at least one of the plurality of ring modulators having a resonant wavelength that is the same as a wavelength of the input light.

Abstract: An imaging guidewire can include one or more optical fibers communicating light along the guidewire. At or near its distal end, one or more blazed or other fiber Bragg gratings (FBGs) directs light to a photoacoustic transducer material that provides ultrasonic imaging energy. Returned ultrasound is sensed by an FBG sensor. A responsive signal is optically communicated to the proximal end of the guidewire, and processed to develop a 2D or 3D image. In one example, the guidewire outer diameter is small enough such that an intravascular catheter can be passed over the guidewire. Techniques for improving ultrasound reception include using a high compliance material, resonating the ultrasound sensing transducer, using an attenuation-reducing coating and/or thickness, and/or using optical wavelength discrimination. Techniques for improving the ultrasound generating transducer include using a blazed FBG, designing the photoacoustic material thickness to enhance optical absorption.

Abstract: Coupled-resonator optical waveguides (CROW) can be used to control a speed of an optical signal. In particular, the coupling distance between the resonators can be adjusted to precisely control a group delay of an optical wave. Systems and methods are described to control such coupling distance in a CROW.

Abstract: An imaging guidewire can include one or more optical fibers communicating light along the guidewire. At or near its distal end, one or more blazed or other fiber Bragg gratings (FBGs) directs light to a photoacoustic transducer material that provides ultrasonic imaging energy. Returned ultrasound is sensed by an FBG sensor. A responsive signal is optically communicated to the proximal end of the guidewire, and processed to develop a 2D or 3D image. In one example, the guidewire outer diameter is small enough such that an intravascular catheter can be passed over the guidewire. Techniques for improving ultrasound reception include using a high compliance material, resonating the ultrasound sensing transducer, using an attenuation-reducing coating and/or thickness, and/or using optical wavelength discrimination. Techniques for improving the ultrasound generating transducer include using a blazed FBG, designing the photoacoustic material thickness to enhance optical absorption.

Abstract: The present invention is an optical interconnect structure characterized by that it comprises an optical waveguide comprising a first core and a connective optical waveguide which is formed on the optical waveguide and comprises a second core, and that a first diffraction grating formed in the first core and a second diffraction grating formed into the second core are arranged such that at least a part of the former faces a part of the latter.

Abstract: Electro-optic modulator includes a substrate, a waveguide formed in a top surface of the substrate, first modulating electrodes and second modulating electrodes. The waveguide includes a Y-shaped incident member, a Y-shaped output member, and first and second connection members. The Y-shaped incident member includes an incident portion, first and second incident branches. The Y-shaped output member includes an output portion, a first and second output branches. The first connection member includes a first branch and a second branch. The second connection member includes a third branch and a fourth branch. The first branch and the second branch are interconnected between the first incident branch and the first output branch and arranged in parallel. The third branch and the fourth branch are interconnected between the second incident branch and the second output branch and arranged in parallel.

Abstract: An arrayed waveguide grating provided with a first slab waveguide formed on a substrate; a second slab waveguide formed on the substrate; a first input/output waveguide connected to the first slab waveguide; a second input/output waveguide connected to the second slab waveguide; two or more channel waveguide groups connecting the first and second slab waveguides, each of the channel waveguide groups formed of an aggregate of a plurality of channel waveguides having path lengths sequentially becoming longer by a predetermined path length difference; and an optical filter arranged in at least one of the first and second slab waveguides.

Abstract: Devices and systems which include on-chip waveguides with flattened dispersion are described. In one aspect, silicon nitride slot waveguides that exhibit four zero-dispersion wavelengths with a flattened dispersion over a wavelength range of 500 nm are obtained. The disclosed silicon nitride slot waveguides are used to generate a two-octave supercontinuum from 630 nm to 2650 nm, enabling (a) on-chip generation of 5 fs optical pulses as short as 1.3 cycles, and (b) sensitive single-shot measurements of the absolute carrier-envelope phase using a single integrated waveguide. In another aspect, silicon slot waveguides that exhibits four zero-dispersion wavelengths with a flattened dispersion over a wavelength range of 670-nm are obtained. An octave-spanning supercontinuum is generated in the disclosed silicon slot waveguide, over a wavelength range from 1217 nm to 2451 nm, approximately from bandgap wavelength to half-bandgap wavelength.

Abstract: There is provided an optical waveguide device. The device includes: a wiring substrate having a first opening portion therein and including: a substrate having an upper surface and a lower surface opposite to the upper surface; an upper side wiring layer formed on the upper surface of the substrate, and a lower side wiring layer formed on the lower surface of the substrate, an optical waveguide formed on the lower side wiring layer; a first optical element connected to the upper side wiring layer; a first circuit element electrically connected to the first optical element through the upper side wiring layer; a second optical element connected to the lower side wiring layer through the first opening portion; and a second circuit element electrically connected to the second optical element through the lower side wiring layer.

Abstract: An optical sensor based on a broadband light source and cascaded waveguide filters comprises a broadband light source, an input waveguide, a reference ring resonator coupled with the input waveguide, a common bus waveguide coupled with the reference ring resonator, a sensing ring resonator coupled with the common bus waveguide, an output waveguide coupled with the sensing ring resonator, and two optical power detectors. At least a portion of the sensing ring resonator is influenced by the physical parameter to be measured or in contact with an analyte. The variation of the physical parameter to be measured or the variation of the analyte induces a shift of the transmission spectrum of the sensing ring resonator. By using the cascaded filtering effect of the double resonators, the wavelength shift can be translated into a variation of the total output power. Consequently the physical parameter to be measured can be easily deduced.

Abstract: An optical fiber for use as a stub fiber in an optical fiber connector is disclosed. The optical fiber is configured with a segmented core that includes a single-mode segment with a step-index profile and at least one multimode segment having at least one alpha profile. A connector that employs the stub fiber can connect to both a single mode fiber and a multimode fiber.

Abstract: Disclosed are systems and methods for improving the performance of systems for generating and detecting electromagnetic radiation at terahertz (THz) frequencies. Embodiments of the systems and methods include the fabrication and use of coupling tapers to provide efficient transfer of THz radiation between a photomixer and a waveguide that supports a propagating THz mode. A representative system comprises of a photomixer to convert high-frequency components of an optical pump signal into corresponding electrical THz frequencies, a waveguide that supports a propagating THz mode, and a matching taper that effectively converts the highly localized currents generated by the photomixer to the mode supported by the waveguide.

Abstract: Provided are a spot size converter and a method of manufacturing the spot size converter. The method includes stacking a lower clad layer, a core layer, and a first upper clad layer on a substrate, tapering the first upper clad layer and the core layer in a first direction on a side of the substrate, forming a waveguide layer on the first upper clad layer and the lower clad layer, and etching the waveguide layer, the first upper clad layer, the core layer, and the lower clad layer such that the waveguide layer is wider than a tapered portion of the core layer on the side of the substrate and has the same width as that of the core layer on another side of the substrate.

Abstract: An optical module includes a photoelectric conversion element optically connected to an optical fiber, a plate-shaped substrate mounting the photoelectric conversion element, coupling members fixed to both end portions of the substrate so as to sandwich the photoelectric conversion element, and a cover member coupled to the substrate by the coupling members so as to cover at least a portion of the substrate.

Abstract: Systems, apparatuses and methods are provided for increasing the aperture ratio of a display by increasing the total travel distance of respective light modulating bodies in a display while maintaining fast switching speeds. Increasing the total travel distance allows for a larger aperture ratio in a display, which provides greater power savings and increased display brightness. The total travel distance of a light modulating body includes the distance the body travels from an open position to a closed position, and vice-versa. In one example, the travel distance of a light modulating body (e.g., any of the light modulators as described above) is asymmetric: from a neutral position, the body travels a greater distance in a first direction than in a second direction.

Abstract: An optical fiber includes a first end and a second end. The optical fiber includes a core for transmitting optical signals from the first end to the second end. The core has end surfaces at the first and second ends and a cladding is positioned around a circumference of the core. Magnetic elements are provided at the end surfaces of the first end and the second end. The magnetic elements are configured to magnetically couple the core to a magnetic element at an end of a core of another optical fiber. The magnetic elements form part of a light transmission path defined by the core. The magnetic elements are optically transmissive and allow optical signals to pass therethrough.

Abstract: A method of forming a single-mode polymer waveguide array connector that provides precise alignment of a plurality of cores of polymer waveguide arrays with respect to an absolute reference position, such as a guide pin hole in a ferrule, when the polymer waveguide array connector is connected to another polymer waveguide array connector or provides precise alignment of a plurality of cores of a polymer waveguide array and a fiber array with respect to the absolute reference position when the polymer waveguide array connector is connected to a single-mode fiber array connector. A plurality of cores of single-mode polymer waveguide arrays or single-mode fiber arrays is precisely aligned with each other. In addition, there is provided a combination of a plurality of molds, e.g., a first mold (A) and a second mold (B), used in a plurality of processes in a specific method.

Abstract: Waveguide apparatuses and methods are provided. A waveguide method (700) can include stacking (710) a plurality of layers (110) to form a plurality of waveguides (120). Each of the plurality of layers can include at least one waveguide surface (140). The method can further include aligning (720) the plurality of layers using at least one alignment device (160). The method can also include trapping (730) the aligned, stacked plurality of layers between a first member (170) and second member (180).

Abstract: Alignment of a single-mode polymer waveguide (PWG) array fabricated on a polymer with a silicon waveguide (SiWG) array fabricated on a silicon (Si) chip and thereby realizing an adiabatic coupling. A stub and a groove are fabricated with high precision and made to function as the absolute positioning reference to provide a self-alignment according to the groove and the stub. In a PWG patterning by photolithography, plural masks are used, but the fabrication is made along the alignment base line for mask and thus a high precision is achieved with respect to error ?x. In a PWG patterning by nano imprint, a high precision in the fabrication is also achieved with respect to error ?x and ?y.

Abstract: An optical waveguide structure may include an optical waveguide structure located within a semiconductor structure and an optical coupler. The optical coupler may include a metallic structure located within an electrical interconnection region of the semiconductor structure, whereby the metallic structure extends downward in a substantially curved shape from a top surface of the electrical interconnection region and couples to the optical waveguide structure. The optical coupler may further include an optical signal guiding region bounded within the metallic structure, whereby the optical coupler receives an optical signal from the top surface and couples the optical signal to the optical waveguide structure such that the optical signal propagation is substantially vertical at the top surface and substantially horizontal at the optical waveguide structure.

Abstract: An optical converter and a method of manufacturing the optical converter are provided. The optical converter may include a signal receiving portion configured to receive an optical signal from an optical fiber which can be coupled to the optical converter, a signal output portion configured to output the optical signal received by the signal receiving portion, and a signal coupling portion being disposed between the signal receiving portion and the signal output portion and being configured to couple the optical signal received by the signal receiving portion into the signal output portion. The signal output portion may include a waveguide element having at least one tapered end section, and being partially or wholly surrounded by the signal coupling portion. The at least one tapered end section may be configured to couple the optical signal from the signal coupling portion into the waveguide element and the waveguide element may be configured to output the optical signal.

Abstract: An optical component has first and second planar lightwave circuits. The first and second planar lightwave circuits are aligned and jointed such that the position of an i-th optical waveguide (where i is an integer greater than or equal to 1 and less than or equal to n) of the first planar lightwave circuit and that of an i-th optical waveguide of the second planar lightwave circuit are matched on a joint interface. An angle formed by the i-th optical waveguide of the first planar lightwave circuit and a normal of the interface is configured to vary in accordance with a value of i within a range satisfying the Snell's law.

Abstract: A monolithic integrated structure comprising a buried heterostructure semiconductor optical amplifier and a deep ridge optical receiver comprising such structure are disclosed.

Abstract: In embodiments of a multiple waveguide imaging structure, an imaging structure includes a first waveguide for see-through viewing of an environment at a first field of view, and includes a second waveguide for see-through viewing of the environment at a second field of view. The first and second waveguides each include a polarizing beam splitter to reflect light that enters at a first polarization orientation angle in the respective first and second waveguides, and the polarizing beam splitters pass through the light that enters at a second polarization orientation angle. The imaging structure also includes a polarization switch to rotate the polarization of the light through the first and second polarization orientation angles.

Abstract: A side pump fiber and a method of making a side pump fiber are provided. A plurality of pump fibers can be joined to a side of a signal fiber, at different locations. The method includes creating a lengthwise, tapered, concave pocket cut in a pump (or side pump) fiber, inserting the signal fiber in the pocket cut, and then coupling the side pump fiber to the center fiber at the pocket cut. Optical amplifiers and lasers, as examples, can be made using the above method and side pump fibers.

Abstract: An optical antenna and methods for optical beam steering are provided. One optical planar antenna includes a linear waveguide within a substrate and having a fiber interface. The optical planar antenna also includes a planar waveguide within the substrate, a first diffractive optical element configured to couple the linear waveguide to the planar waveguide and a second diffractive optical element configured to couple the planar waveguide to free space.

Abstract: An optical fiber for use as a stub fiber in an optical fiber connector is disclosed. The optical fiber is configured with a segmented core that includes a single-mode segment with a step-index profile and at least one multimode segment having at least one alpha profile. A connector that employs the stub fiber can connect to both a single mode fiber and a multimode fiber.

Abstract: There is provided an underwater apparatus that includes a housing including a certain device, a pair of cable couplings including gimbals through which tail cables extends from the device to the outside of the housing pass, and the pair of cable couplings that connect the tail cables passing through the gimbals to a submarine cable, and a connecting holder configured to include gimbal rings fitted to the gimbals and to connect the pair of cable couplings to the housing via the gimbal rings so that the pair of cable coupling is rotatable relative to the housing, the connecting holder including an opening from which the gimbals are introduced toward the gimbal rings, wherein the connecting holder includes notches provided in an edge of the opening and the notches are formed so that the pair of cable coupling is rotatable relative to the housing.

Abstract: Disclosed is a planar waveguide element including a first cylindrical lens disposed based on an z-axis and configured to collimate beams emitted from a plurality of emitters of a laser diode bar; a lens array configured to gather the beam emitted from each emitter via the first cylindrical lens; a plurality of first waveguides existing on an x-y plane by a number of the plurality of emitters and configured to gather at one place via a bending section; a taper configured to connect the lens array and each first waveguide, a width of the taper being narrower from the lens array to the plurality of first waveguide; and a combined waveguide configured to combine the plurality of first waveguides into one.

Abstract: A silicon-based opto-electronic circuit is formed to exhibit reduced polarization-dependent loss by strategically placing the photodetecting device as close as possible to the entry point of the optical signal into the opto-electronic circuit arrangement. While the incoming optical signal will include both TE and TM modes, by minimizing the length of the optical waveguide path along which the signal must propagate before reaching a photodetector, the attenuation associated with TM mode signal will be negligible.

Abstract: An optical fiber coupler in which damage to a pumping light source can be suppressed even if signal light leaks and an optical fiber amplifier using the optical fiber coupler are provided. An optical fiber coupler includes: a first optical fiber having a core and a clad coating the core; a second optical fiber having a core; and a fusion-drawn portion formed by arranging the first optical fiber and the second optical fiber so that their longitudinal directions are in the same direction and fusing the clad of the first optical fiber and the core of the second optical fiber. The clad of the first optical fiber has a larger refractive index than the core of the second optical fiber.

Abstract: A method and system for multi-mode integrated receivers are disclosed and may include receiving an optical signal from an optical fiber coupled to a chip comprising a photonic circuit. The photonic circuit may comprise an optical coupler, one or more multi-mode optical waveguides, and a detector. The received optical signal may be coupled to a plurality of optical modes in the one or more multi-mode optical waveguides, which are communicated to a detector to generate an electrical signal from the communicated modes. The optical coupler may comprise a grating coupler. The chip may comprise a CMOS chip, and the optical fiber may comprise a single-mode or a multi-mode fiber. The detector may comprise a germanium or silicon-germanium photodiode, and/or a waveguide detector. The optical fiber may be coupled to a top surface of the chip and the multi-mode optical waveguides may comprise rib waveguides.

Abstract: According to the present invention, as a result of using a depressed or trench-assisted light-receiving waveguide in which the core is surrounded by a layer having a refractive index lower than that of a cladding as light-receiving means for receiving light outputted from a multi-core optical fiber, the layer of a low refractive index can inhibit the propagation of noise, etc. from the cladding to the core. Consequently, even in cases where the inter-core crosstalk is small, it is possible to accurately measure the inter-core crosstalk since components different from crosstalk-derived components in optical power are reduced.

Abstract: An optical polarization rotator includes first and second optical waveguide ribs located along a planar surface of a substrate. The second optical waveguide rib is located farther from the surface than the first optical waveguide rib. First segments of the optical waveguide ribs form a vertical stack over the substrate, and second segments of the optical waveguide ribs are offset laterally in a direction along the planar surface. The first and second optical waveguide ribs are formed of materials with different bulk refractive indexes.

Abstract: A light emitting device includes a first layer that generates light by an injection current, the first layer is provided with a first optical waveguide extending from a first light emitting section disposed on a first side surface to a first light reflecting section disposed on a second side surface, a second optical waveguide extending from the first light reflecting section to a second light reflecting section disposed on a third side surface, and a third optical waveguide extending from the second light reflecting section to a second light emitting section disposed on the first side surface, an element of the group II or the group XII is diffused in the first light reflecting section and the second light reflecting section, and a first light emitted from the first light emitting section and a second light emitted from the second light emitting section are emitted in the same direction.

Abstract: Lightguides, devices incorporating lightguides, processes for making lightguides, and tools used to make lightguides are described. A lightguide includes light extractors arranged in a plurality of regions on a surface of the lightguide. The orientation of light extractors in each region is arranged to enhance uniformity and brightness across a surface of the lightguide and to provide enhanced defect hiding. The efficiency of the light extractors is controlled by the angle of a given light extractor face with respect to a light source illuminating the light guide.

Abstract: An amplification optical fiber with an optical component capable of efficiently absorbing pumping light and a fiber laser device including the same are provided. An amplification optical fiber with an optical component in a fiber laser device 1 includes: an amplification optical fiber 30 having a core 31 doped with an active element and a clad 32 through which pumping light for amplifying light to be amplified propagating through the core 31 propagates; and an optical component 50 including at least one optical fiber 53a to 53f having a first end coupled to a portion of the clad 32 and a second end coupled to at least another portion of the clad 32 at one end 35 of the amplification optical fiber 30.