Single-Fiber Automatic Coupling System

Max. power (CW): 4.5 kW Focal lengths: 50, 60, 70, 85, 100 mm Max. collimated beam [incl. 99% of the beam energy]: Ø18 mm (incl. 99% of the beam energy)

The Fiber Coupling Unit (FCU) is an interface between the high power laser source and the fiber optic cable. The collimated beam from the laser is focused inside the FCU into the fiber core. The FCU handles required safety functions and includes sensors for improved supervising. The unit is easily integrated to the laser.

Selectable Operating Wavelength Range: 180-2000nm Coupling Efficiency [Single-Mode Fiber]: >60% Coupling Efficiency [Multimode Fiber]: >80%

Pigtailed laser-to-fiber couplers are recommended for permanent or semipermanent coupling without frequent fiber changes, high coupling efficiency and stable output, low back-reflection and high polarization-maintaining capability. The fiber and focusing lens are permanently joined with adhesive, then placed in a tilt-adjustable flange positioned by two screws. Neither fiber nor lens can be exchanged. LPSC-01 is a contact type with the internal fiber end face touching the lens; LPSC-03 is noncontact with a gap. Typical back-reflection of the contact type is -25dB. Angled polishing of the internal fiber end reduces reflection in noncontact versions, available with -40dB or -60dB back-reflection.

Selectable Operating Wavelength Range: 180-2000nm Coupling Efficiency [Single-Mode Fiber]: >60% Coupling Efficiency [Multimode Fiber]: >80%

Pigtailed laser-to-fiber couplers are recommended for permanent or semipermanent coupling without frequent fiber changes, high coupling efficiency and stable output, low back-reflection and high polarization-maintaining capability. The fiber and focusing lens are permanently joined with adhesive, then placed in a tilt-adjustable flange positioned by two screws. Neither fiber nor lens can be exchanged. LPSC-01 is a contact type with the internal fiber end face touching the lens; LPSC-03 is noncontact with a gap. Typical back-reflection of the contact type is -25dB. Angled polishing of the internal fiber end reduces reflection in noncontact versions, available with -40dB or -60dB back-reflection.

Body Material: SUS303 Surface Treatment: PVD Coating Quantity: 1

JCOPTIX multiaxis fiber-coupling accessories include rotators, clamps, and magnetic hold-downs for bare fibers. Special surface treatment makes clamps soft and oxidation-resistant. Soft materials at magnetic clamp contact points protect fibers while holding them stably. Hold-down fiber clamp. Model: FAH-V1. Fiber diameter Ø125-341 μm; fits DMF-R6/DMF-L6 six-axis coupling stages; FAH-AP adapts it to five-axis stages. Ordinary clamps may not support fiber tips close enough to small-waveguide input ports. JCOPTIX FAH-V1 has a tapered tip for visual observation of the fiber/waveguide interface. Two supplied FAH-V1M magnetic hold-downs secure the fiber and are also sold separately. Two M3 screws and a key are included. Quick-release fiber clamp. Model: FAH-V2. Diameter Ø125-341 μm; for DMF-R5S/DMF-L5S five-axis coupling stages. JCOPTIX FAH-V2 attaches fibers to DMF-L5S/DMF-R5S stages for alignment. It gently holds fibers in a precision V-groove. A lower V-groove matches the five-axis stage and locks with a side screw. A bottom 1 M4 hole also mounts directly to posts. Threaded-hole fiber clamp. Model: FAH-V3. Bottom M4 thread; V-groove for Ø110-341 μm fibers; thumbscrew adjusts magnetic force. Simple mechanics clamp the external buffer without damaging the fiber. A thumbscrew adjusts magnetic attraction. The bottom M4 hole attaches Ø12.7 mm posts or integrates into breadboard/table assemblies. Fiber-clamp adapter plate. Model: FAH-AP. Direct five-axis-stage mounting; side set-screw locking; dovetail adapts FAH-V1. This JCOPTIX plate mounts FAH-V1 on DMF-L5S/DMF-R5S five-axis coupling stages. A bottom dovetail secures to the stage; a top rectangular guide block mates with FAH-V1's bottom rectangular groove for precise, reliable, convenient location. Magnetic hold-downs for FAH-V1. Model: FAH-V1M-P6. 6 per pack; soft undersides protect bare fibers; use with FAH-V1. These JCOPTIX hold-downs work with FAH-V1 clamps. Appropriate magnetic force secures bare fibers on FAH-V1 without damage, and soft bottom material adds protection. FAH-V1 magnetic hold-downs replace those supplied with FAH-V1 or support other custom fiber assemblies. Fiber rotator. Model: FSS-FR007. Mounts on compact three-axis stages; reliable V-groove location; accepts bare uncoated fiber with 125 µm cladding; magnetic pressure plate with screw-adjustable force; continuous 360-degree rotation lockable anywhere; maximum eccentricity 10μm. This JCOPTIX rotator suits angle-sensitive systems such as polarization experiments/coupling. A platform V-groove coarsely locates bare fiber, secured by a pressure plate. Its upper screw adjusts force to avoid stress deformation and induced birefringence. Mounted bare fiber rotates 360°, locks anywhere, and has maximum eccentricity 10μm. The opposite-end knob has 5° graduations; with an approximately 3° indicator-line width it provides about 2° minimum resolution. A locking screw secures the core's angular position. A 3 mm-wide base key fits compact-stage products and can be used with other fiber clamps/accessories. Compact-stage tops have central keyways for precise accessory alignment along the stage axis. Note: the precision rotator is preset for 125 µm outside-cladding-diameter fibers with buffer stripped. Coating, also called buffer, protects glass cladding from particles that could cause breakage. Some specialty coatings also act optically as a second cladding; consider optical properties before removal.