60 results about "Bend loss" patented technology

The invention discloses a hollow-core and solid-core optical fiber hybrid optical fiber bundle and an optical cable comprising the same, and belongs to the technical field of optical fiber communication, the hollow-core and solid-core optical fiber hybrid optical fiber bundle comprises a hollow-core optical fiber, a solid-core optical fiber (the solid-core optical fiber can be G.652D, G.654E or G.655 and the like), a first layer of resin and a second layer of resin; a hollow-core optical fiber is arranged in the center of an optical fiber bundle to ensure that the bending radius of the hollow-core optical fiber is maximum when the optical fiber bundle is bent, the bending loss of the hollow-core optical fiber is reduced, and meanwhile, the periphery of the hollow-core optical fiber is coated with a layer of low-modulus resin to reduce the bending stress of the hollow-core optical fiber; meanwhile, the periphery of the low-modulus resin is filled with the high-modulus resin, so that the mechanical performance of the optical fiber bundle is guaranteed, the solid-core optical fibers arranged in the optical fiber bundle in a mixed mode are annularly distributed on the outer sides of the hollow-core optical fibers, the hollow-core optical fibers in the middle are protected through the solid-core optical fibers, and the overall mechanical strength of the optical fiber bundle is further improved.

This invention discloses a system and method for achieving single-mode transmission of sapphire optical fiber using a mechanically wound helical structure, belonging to the technical field of optical fiber transmission and high-temperature optical devices. The method involves winding sapphire optical fiber along a specific pitch to form a helical structure on a core, introducing controllable bending loss to suppress higher-order modes. Subsequently, high-temperature annealing and structural fixation ensure uniform stress distribution within the fiber and maintain a stable structure. Finally, optical testing verifies the single-mode transmission effect. This method offers advantages such as simple structure, no need for complex processing equipment, low cost, and high stability, and can be widely applied in high-temperature optical fiber sensing and high-power laser transmission.

The invention provides a thulium-doped optical fiber with high spectral purity and a preparation method thereof, and the thulium-doped optical fiber with high spectral purity adopts a profile design that the refractive index of a main gain layer follows linear gradual change distribution of a linear function and the refractive index of a secondary gain layer is constant, so that the mode distribution of an optical fiber fundamental mode is precisely overlapped with the main gain layer; the secondary gain layer is located at the lowest point of the waveguide refractive index; the design can effectively solve the problem that in the prior art, due to the limitation of the MCVD technology, the doping concentration difference of the main gain layer and the secondary gain layer is caused, and then the optimal emission wavelengths of different gain areas are inconsistent. Besides, depending on the bending loss difference of the main gain layer and the secondary gain layer, on the premise that the gain efficiency of the optical fiber is not sacrificed, effective separation of emission wavelengths of the main gain layer and the secondary gain layer can be achieved through bending regulation, the target wavelength of the main gain layer is reserved, and the non-target wavelength of the secondary gain layer is filtered out. And finally, the spectral purity of the thulium-doped optical fiber is improved.

This optical fiber comprises a core, an inner cladding, a trench, and an outer cladding. When the relative refractive index difference of the core is ∆1, the relative refractive index difference of the inner cladding is ∆2, the relative refractive index difference of the trench is ∆3, the relative refractive index difference of the outer cladding is ∆4, the outer diameter of the core is 2r1, the outer diameter of the inner cladding is 2r2, the outer diameter of the trench is 2r3, and the outer diameter of the outer cladding is 2r4, the following relationships are established.　2.2 ≤ r2 / r1 ≤ 3.6; 3μm ≤ r3 － r2 ≤ 12μm; 0.25% ≤ ∆1 － ∆2 ≤ 0.50%; − 0.70% ≤ ∆3 ≤ − 0.10%; A zero-dispersion wavelength is 1296-1306 nm. A zero-dispersion slope is 0.088 ps / nm2 / km or less. A 500-meter cable cutoff wavelength is 1260 nm or less. A bending loss for light with a wavelength of 1310 nm when the optical fiber is wound around a mandrel having a diameter of 15 mm is 0.5 dB or less per turn.

The utility model discloses a tension-resistant tightly-wrapped aramid fiber optical fiber for ultra-long-distance flight of a small unmanned aerial vehicle in the related technical field of optical fibers, which comprises an optical fiber main body, two aramid fibers are symmetrically arranged on two sides of the optical fiber main body, tightly-wrapped layers are arranged on the outer sides of the optical fiber main body and the aramid fibers, and the optical fiber main body is a single-mode optical fiber which is not sensitive to bending loss. The optical fiber main body is a 6.657. A2 type optical fiber, and the outer side of the tight wrapping layer is provided with a super-hydrophobic layer. According to the utility model, the aramid fibers are arranged at the two sides of the optical fiber main body, the tight wrapping layer is extruded outside the optical fiber and the aramid fibers, and the three are combined together to form the tension-resistant tight wrapping aramid fiber optical fiber for the unmanned aerial vehicle, so that the mechanical performance of the optical fiber is improved while the good conductivity of the optical fiber is ensured, and meanwhile, the optical fiber in the application state is light in weight and convenient to manufacture. The ultra-long flight distance signal wired transmission of a small unmanned aerial vehicle can be easily realized, a common wireless electromagnetic wave control signal is prevented from being interfered, and the hydrophobic and oleophobic characteristics of the optical fiber are effectively improved due to the arrangement of the super-hydrophobic layer.

This invention discloses a distributed optical fiber temperature measurement and calibration device, comprising a housing, a cover, an optical fiber body, and a temperature measurement and calibration module. The cover is hinged and rotated at the top of the housing, located at an opening. Inside the housing, a wireframe assembly for supporting and positioning the optical fiber body is fixedly installed. The temperature measurement and calibration module is fixedly mounted on the wireframe assembly. The wireframe assembly includes a wireframe body and an optical fiber slot. This invention effectively solves the problem of low calibration accuracy caused by the small coiling radius and high micro-bending loss of the optical fiber body in existing devices through the rational design of the wireframe assembly. The annular wireframe body increases the coiling radius of the optical fiber body, and the spacers, combined with the spacers, support the optical fiber body to form gaps, reducing bending stress and friction loss. Through holes and slots ensure airflow, further reducing micro-bending loss and improving signal transmission stability. The side heat dissipation assembly achieves forced heat dissipation through a cooling fan and an airflow guide shroud.

The invention belongs to the field of optical fiber sensing, and particularly relates to a three-layer step type optical fiber structure which has a wide bending radius sensing range and high bending sensitivity on the premise that bending loss can be resisted. By regulating and controlling the refractive index of the second layer of the fiber core, balance between low bending loss and high bending sensitivity is achieved. And meanwhile, two groups of spatially separated acoustic modes are excited under a specific refractive index condition, so that double Brillouin gain peaks can be formed. Specifically, when the refractive index of the second layer of the fiber core changes, the characteristics of optical and acoustic modes and opto-acoustic interaction are studied, and finally a W-type optical fiber structure with excellent performance is determined. The structure has a wider bending radius sensing range and higher bending sensitivity while keeping a good bending loss resistance characteristic. In a word, the optical fiber structure provided by the invention has important application value in the field of optical fiber double-physical parameter distributed sensing, and a new thought is provided for realizing high-performance Brillouin bending sensing.

The invention discloses a method for adaptively adjusting the coiling diameter of a gain optical fiber and a laser system, and relates to the field of optical fiber lasers, and the method comprises the steps: obtaining the temperature of the gain optical fiber under the current coiling diameter and the current LD current; determining the current transverse refractive index distribution of the gain fiber according to the temperature of the gain fiber based on a thermo-optic effect and a numerical modeling mode; according to the current transverse refractive index distribution, bending loss curves of conduction modes LP01 and LP11 in the gain fiber are calculated; according to a preset optimization principle, the optimal coiling diameter of the gain fiber is determined according to the bending loss curves of the conduction modes LP01 and LP11; the optimal coiling diameter is used as an adjustment basis of the coiling diameter of the gain fiber. The coiling diameter of the gain optical fiber is automatically adjusted according to self-adaptive feedback according to the temperature of the optical fiber, so that the TMI threshold value is increased.

This invention provides a transient displacement sensor based on uniform macro-bending loss of optical fiber and dynamic changes in tension and compression of an elastic substrate, along with its fabrication method and applications, belonging to the field of optical fiber sensor design. It includes an elastic substrate and an optical fiber inserted into the elastic substrate. The optical fiber is inserted into the elastic substrate at equal intervals and fixedly connected to the substrate at the insertion points. After insertion, the optical fiber exhibits a continuous wavy bend with identical shapes. One end of the optical fiber is connected to a light source, and the other end is connected to a photodiode. Deformation of the elastic substrate along the length of the optical fiber causes a change in the fiber's curvature. The width of the elastic substrate is 20-500 times the diameter of the optical fiber. The sensor fabrication method is simple, convenient, reliable, and easy to operate. The sensor measures a wider displacement range, can perform continuous measurements, and has a larger dynamic monitoring range. In application, this invention exhibits a large linear region and high reliability.

The fiber optic cable (1) of the present invention is characterized in that a plurality of F with geometric micro-bending loss characteristics are housed in the internal space (3S) of the sheath (3). μBL_G and optical microbending loss characteristics F μBL_Δβ The fiber (10), when the cable characteristics Dc of the fiber cable (1) are defined using the porosity a of the internal space (3S) and the number of cores b of the fiber (10) housed in the internal space (3S), has the microbending loss characteristic factor F expressed by the following formula. μBL_GΔβ The value is 1.2 × 10 －9 The following F μBL_GΔβ =F μBL_G ×F μBL_Δβ ×Dc.

The utility model relates to the field of fiber lasers, and particularly discloses a composite core layer large-mode-field single-mode fiber. The structure of the optical fiber sequentially comprises a composite fiber core layer, a trapezoidal gradient refractive index coupling ring, a sunken groove structure and a wrapping layer from inside to outside. The fiber core layer is formed by compounding three layers of fiber cores with different refractive indexes, and the refractive indexes of the fiber cores are sequentially reduced from inside to outside; the refractive index change condition of the trapezoidal gradient refractive index coupling ring is an isosceles trapezoid, the refractive index of the top of the trapezoidal gradient refractive index coupling ring is consistent with the refractive index of the innermost fiber core, and the refractive index values of the waist parts at the two sides are uniformly and progressively decreased from the top fiber core value to the two sides to the refractive index value of the cladding; the refractive index of the sunken groove structure is lower than that of the cladding, and the sunken groove structure is of an annular structure. The optical fiber can improve the transmission quality of the optical fiber under the bending condition, increase the mode field area of the optical fiber and reduce the bending loss generated by a fundamental mode under the condition of small-size radius bending, has the capability of meeting the single-mode transmission condition under the condition of long-wave-band wavelength, and has good use potential.

This invention discloses a hollow-core fiber easy-splitting optical cable and its preparation method, belonging to the field of optical cable technology. It includes an outer sheath and two reinforcing members embedded within the outer sheath; the inner edge cross-section of the outer sheath is elliptical; and a hollow-core fiber ribbon disposed within the outer sheath, comprising multiple hollow-core fibers. A bridging resin layer is disposed between adjacent hollow-core fibers, with one end of the bridging resin layer connected to the hollow-core fiber and the other end forming an adhesive mesa. An adhesive layer is disposed between the two adhesive mesas, and the modulus of the adhesive layer is lower than that of the bridging resin layer. By configuring the hollow-core fibers in a ribbon-like form, this invention allows multiple hollow-core fibers to form a single structure. When the hollow-core fiber easy-splitting optical cable is subjected to pressure bending or stripping, the bridging resin layer and adhesive layer on the hollow-core fiber ribbon can distribute the pressure on the hollow-core fibers throughout the entire hollow-core fiber ribbon, resulting in uniform stress distribution. This avoids localized stress accumulation in the hollow-core fibers and alleviates the problem of excessive bending loss in hollow-core fibers.

The application discloses an ultra-compact right-angle bending waveguide modulator based on a phase change material, belongs to the technical field of photoelectric modulation, and solves the problem of how to design a bending waveguide photoelectric modulator with good modulation performance and small floor area; a right-angle is inverted at the outer right-angle bending of a right-angle bending silicon waveguide; one side of a cuboid vanadium dioxide is closely attached to a plane formed by the inverted right-angle; when the cuboid vanadium dioxide works in a metal phase, a mirror structure is formed on the plane formed by the inverted right-angle at the outer right-angle bending of the right-angle bending silicon waveguide, so that the transmittance of an input optical signal at the bending is enhanced; when the cuboid vanadium dioxide works in a semiconductor phase, the input optical signal leaks into the cuboid vanadium dioxide at the outer right-angle of the right-angle bending silicon waveguide, and the transmittance of the input optical signal at the outer right-angle of the right-angle bending silicon waveguide is very low due to huge bending loss; the structure of the application is extremely simple, easy to realize, and the floor area of a modulation layer can reach nanometer level.

The application discloses a thickness-based refractive index gradient micro-ring resonator, comprising: a ring optical waveguide located on a substrate; an input optical waveguide configured to couple light into the ring optical waveguide; the ring optical waveguide has a feature that the thickness decreases along the radial direction, so that the refractive index decreases linearly with the micro-ring radius from small to large, under the premise of realizing a wide free spectral range and low bending loss, the resonator has a higher quality factor, the structure is simple, the resonator can be obtained through a mature photolithography technology, and is suitable for industrial application.

The application discloses a kind of hollow and solid core fiber hybrid fiber bundle and cable comprising it, belong to optical fiber communication technical field, including hollow optical fiber, solid core optical fiber (solid core optical fiber can be G.652D, G.654E or G.655 etc.), first layer resin and second layer resin;It is arranged at the center position of fiber bundle by hollow optical fiber, to ensure that the bending radius of hollow optical fiber is maximum when fiber bundle bends, reduce the bending loss of hollow optical fiber, while a layer of low modulus resin is coated on the outer periphery of hollow optical fiber to reduce the bending stress of hollow optical fiber;At the same time, high modulus resin is filled in the outer periphery of low modulus resin to ensure the mechanical properties of fiber bundle, and the multiple solid core optical fibers mixed in the fiber bundle are arranged as annular distribution on the outer side of hollow optical fiber by setting, to protect the middle hollow optical fiber by solid core optical fiber, further improve the mechanical strength of the whole fiber bundle.

An optical fiber communication system is provided with a plastic optical fiber cable (10), light-emitting elements (3, 3 ') formed from a micro-LED array having a number a (a > = 2) of micro-LEDs, and light-receiving elements (4, 4') formed from a photodiode array having a number a or more photodiodes, the plastic optical fiber cable (10) further has a cover layer on the outside of a plastic optical fiber formed from two or more cores and a first sheath layer surrounding the peripheries of the cores, b or more cores (a < = b) among the two or more cores are effective cores for receiving light from the light-emitting element, the cores are formed from an acrylic resin, and b or more cores are effective cores for receiving light from the light-emitting element. The plastic optical fiber cable 10 has a static bending loss of 0.2 dB or less when the bending radius r is 3 mm.

The bending imparting device (30) has at least three or more mandrels (illustrated by a fixed mandrel (55) and a movable mandrel (65)) and imparts a bend to the drawn optical fiber (F) by winding the optical fiber around the mandrels. The diameter of the optical fiber is denoted as D, the radius of the mandrel is denoted as r, the direction connecting the tangent point (T1) on the upstream side at which the optical fiber comes into contact with the mandrel and the tangent point (T2) on the downstream side at which the optical fiber separates from the mandrel is denoted as a first direction (illustrated by the horizontal direction), the interval between adjacent mandrels observed in the first direction is denoted as 2r+d, the direction orthogonal to the first direction is denoted as a second direction (illustrated by the vertical direction), and the interval between adjacent mandrels observed in the second direction is denoted as s. The angle θ formed by the second direction and the common internal tangent line of the adjacent mandrels observed at the center position of the optical fiber is 0 degrees or more and 45 degrees or less, and formula 3 is satisfied.

The utility model provides an optical fiber bending mechanism of an optical fiber identification instrument, which solves the problem that the optical fiber bending mechanism of the existing optical fiber identification instrument cannot control the bending loss of an optical fiber. The optical fiber bending mechanism of the optical fiber identification instrument comprises a sliding seat arranged in the optical fiber identification instrument in a sliding mode and a power structure used for driving the sliding seat to slide, a convex body is arranged on the sliding seat, an optical fiber placing opening with the width extending in the sliding direction of the sliding seat is formed in the convex body, and two limiting bodies located on the two sides of the convex body respectively are arranged in the optical fiber identification instrument. The optical fiber placed in the optical fiber placing port can form a macro bend under the action of the convex body and the two limiting bodies. The bending radian of the optical fiber is adjusted by changing the position of the sliding seat, and the use effect is good.

The invention discloses a communication network optical fiber fault monitoring method, and relates to the technical field of optical fiber fault monitoring, and the method comprises the steps: extracting a temperature loss coefficient between temperature change and optical power loss and a bending loss coefficient between a bending radius and the optical power loss according to historical detection data; if the to-be-detected optical fiber is detected to have no external pressure effect and the to-be-detected environment temperature does not generate deformation influence on the to-be-detected optical fiber, performing optical power compensation of a corresponding section on the initial detection optical power detected by the to-be-detected optical fiber, otherwise, performing optical power compensation on the to-be-detected optical fiber; the method comprises the following steps: predicting a deformation prediction radius of a bending section in a to-be-detected optical fiber under the influence of an external pressure effect value, performing optical power compensation of a corresponding section on initial detection optical power detected by the to-be-detected optical fiber, drawing an optical power attenuation characteristic curve according to the obtained actual detection optical power I or II, and marking a risk fault position point. According to the communication network optical fiber fault monitoring method provided by the invention, the risk fault monitoring efficiency can be improved.

The application provides an online radiation total dose detection method based on fiber micro-bending loss, which comprises the following steps: firstly, placing a reaction cavity in a detection device at a detection position; a transmission window is arranged on the reaction cavity, and a polyethylene detection material is arranged in the reaction cavity; secondly, arranging the transmission window to face a radiation source; an elastic film is arranged on the reaction cavity, so that the inside of the reaction cavity is a sealed environment; then, acquiring a power value at a current time detected by a fiber micro-bending sensor in the detection device; one end of the fiber in the fiber micro-bending sensor is connected to a light source, and the other end is connected to an optical power meter; the fiber is arranged directly above the elastic film; finally, determining the radiation total dose at the current time according to the power value at the current time. The application is based on the principle of fiber micro-bending loss, and the radiation total dose received by the detection material is calculated by monitoring the power change of the fiber in real time, so that the online detection of the radiation total dose of a target environment is realized.

The application discloses a method for adaptively adjusting a gain fiber coiling diameter and a laser system, and relates to the field of fiber lasers. 01 and LP 11 bending loss curves in the gain fiber; and determining an optimal coiling diameter of the gain fiber according to the bending loss curves of the transmission modes LP 01 and LP 11 in accordance with a preset optimization principle. The optimal coiling diameter is used as a basis for adjusting the coiling diameter of the gain fiber. The application realizes adaptive feedback and automatic adjustment of the gain fiber coiling diameter according to the fiber temperature, so as to improve the TMI threshold.

A single mode optical fiber is provided that includes a core region having an outer radius r1 and a maximum relative refractive index Δ1max. The single mode optical fiber further includes a cladding region surrounding the core region, the cladding region includes a depressed-index cladding region, a relative refractive index Δ3 of the depressed-index cladding region increasing with increased radial position. The single mode optical fiber has a bend loss at 1550 nm for a 15 mm diameter mandrel of less than about 0.75 dB / turn, a bend loss at 1550 nm for a 20 mm diameter mandrel of less than about 0.2 dB / turn, and a bend loss at 1550 nm for a 30 mm diameter mandrel of less than 0.005 dB / turn. Additionally, the single mode optical fiber has a mode field diameter of 9.0 microns or greater at 1310 nm wavelength.

The invention provides a refractive index gradient type non-degenerate mode few-mode optical fiber with a controllable light field. The optical fiber is composed of an elliptical fiber core, a high-refractive-index elliptical cylinder, air holes and a cladding, wherein the refractive index of the elliptical fiber core is gradually changed by taking pure silicon dioxide as a center; the elliptic fiber core and the air hole structure which are distributed in a gradually changing refractive index mode by taking a pure silicon dioxide core as a center and have a large effective refractive index difference between modes realize eight Hermitian non-degenerate mode operation with low crosstalk, low intrinsic loss and low bending loss, the elliptic fiber core and the elliptic cylinder structure break mode degeneracy, and light field regulation and control and mode protection functions are realized. Complex MIMO-DSP (Multiple Input Multiple Output-Digital Signal Processor) processing is eliminated, and good performance of MIMO-FREE application is realized.

The application discloses a waveguide bending structure based on a subwavelength Micallan lens and belongs to the technical field of integrated optics, which comprises an input port, an output port, a subwavelength Micallan lens, a first subwavelength taper coupler, a second subwavelength taper coupler, an insulator cladding, an insulating layer and a substrate layer; the input port and the output port are symmetric about the center of the subwavelength Micallan lens; the first subwavelength taper coupler, the subwavelength Micallan lens and the second subwavelength taper coupler are all composed of a periodic subwavelength grating structure; the subwavelength Micallan lens is composed of basic lens units arranged periodically with a large duty cycle on both sides and a small duty cycle in the middle, and the effective refractive index distribution thereof satisfies the reciprocal function of the hyperbolic cosine; the structure can realize low-loss and high-isolation optical path bending in a short propagation distance, break through the physical restriction between the bending radius and the bending loss, and is suitable for photonic integrated circuits and optical information processing chips.

The invention provides a non-degenerate mode few-mode optical fiber for light field regulation and control. The optical fiber is composed of a pure silicon dioxide elliptical fiber core with step refractive index distribution, a high-refractive-index microrod, air holes and a wrapping layer. According to the optical fiber, eight Hermitian non-degenerate mode operation with low crosstalk, low intrinsic loss and low bending loss is realized through a pure silicon dioxide elliptical fiber core and air hole structure, mode degeneration is broken through through the elliptical fiber core and microrod structure, optical field regulation and control and mode protection functions are realized, complex MIMO-DSP processing is eliminated, and the optical fiber has a wide application prospect. And the good performance of the MIMO-FREE application is realized.

The invention relates to the technical field of optical fiber mode-locked lasers, and particularly discloses a bending modulation all-optical fiber saturable absorber and a design and preparation method thereof. According to the method, controllable macroscopic bending modulation is introduced into a common single-mode optical fiber, so that linear loss caused by bending is coupled with a nonlinear Kerr effect in the optical fiber. When the incident light power is high, refractive index modulation caused by the Kerr effect enhances the light guide capability of the central area of the optical fiber, so that the original bending loss is partially compensated, and high-intensity light low-loss transmission is realized; and the low-intensity area at the edge of the light field is insufficient in refractive index modulation to compensate for bending loss, so that light energy leakage is enhanced, and low-intensity light high-loss suppression is formed. The light intensity dependent bending loss modulation mechanism constructs the saturable absorption characteristic of an all-fiber, and the saturable absorption behavior can be obtained by using the structure of the fiber. According to the design, the device structure in the mode-locked laser is simplified, the manufacturing cost is reduced, and the compatibility with a polarization maintaining optical fiber system is improved.

The application belongs to the field of optical fiber cables, and specifically discloses a hollow-core optical fiber cable and a preparation method thereof. The hollow-core optical fiber cable comprises a central reinforcing member, at least one optical unit and an outer sheath. The at least one optical unit is twistedly arranged at the periphery of the central reinforcing member. The optical unit comprises a loose tube and at least one hollow-core optical fiber arranged in the loose tube. The loose tube has a structure of at least two layers, and the friction coefficient of the inner surface of the innermost layer is lower than that of the outer surface of the outermost layer. The outer sheath wraps the central reinforcing member and the optical unit. Through the application, the problem of micro-bending loss of the hollow-core optical fiber cable can be effectively solved.

The invention belongs to the technical field of sensors, and particularly relates to a polymer optical fiber synchronous multi-point displacement sensor based on spiral bending structure bending loss coupling, which comprises a main optical fiber which is fixed into at least one spiral bending structure extending along the axial direction; the light source is connected with one end of the main optical fiber and injects measuring light into the main optical fiber; the at least one secondary optical fiber is arranged on the outer side of the spiral bending structure and can do linear displacement along the spiral axial direction relative to the main optical fiber; and the optical power output by the photoelectric detector changes along with the position of the secondary optical fiber relative to the spiral bending structure, so that displacement measurement is realized, and when a plurality of secondary optical fibers or a plurality of spiral units are arranged, the measurement channels are mutually independent through respective radiation coupling paths and can work synchronously without signal decoupling. Through coupling of radiation loss generated by spiral bending of the main optical fiber and the secondary optical fiber, independent work of a plurality of measurement channels is realized, and extra signal decoupling is not needed.

A flexible optical fiber splice tray assembly and method of manufacture. The method can include securing an optical fiber splice to a flexible substrate using one or more splice attachment features, wherein the optical fiber splice comprises a first end and a second end, wherein a first optical fiber is coupled to the first end of the optical fiber splice, and wherein a second optical fiber is coupled to a second end of the optical fiber splice. The method includes securing the second optical fiber to the flexible substrate using one or more of a plurality of fiber attachment features, wherein the plurality of fiber attachment features are configured to limit a bend radius R of the second fiber to result in a predetermined maximum bending loss. The method includes rolling-up and securing the flexible substrate in a cylinder shape by attaching together two opposite ends of the flexible substrate.

The application discloses a medium waveguide bending loss suppressor and electronic equipment, and relates to the radio frequency technical field.The loss suppressor comprises a first curved shielding member and a second curved shielding member arranged opposite to the first curved shielding member; a plurality of waveguide loss suppression members are arranged between the first curved shielding member and the second curved shielding member, the plurality of waveguide loss suppression members are arranged in a plurality of rows along a first direction, and a plurality of row structures are formed. The first curved shielding member, the second curved shielding member and the plurality of waveguide loss suppression members jointly enclose a suppression cavity, and the suppression cavity is used for effectively suppressing input electromagnetic waves and then outputting the electromagnetic waves. An input waveguide is connected to one end of the two shielding members and is in communication with the suppression cavity, so as to guide external electromagnetic waves into the suppression cavity; and an output waveguide is connected to the other end of the two shielding members and is also in communication with the suppression cavity, so as to guide the electromagnetic waves subjected to the suppression treatment out. The technical scheme provided by the application can solve the problems of large direct bending loss and narrow bandwidth of the existing medium waveguide.