TFB-X MM Power Combiners With Signal Feedthrough

Tapered Fiber Bundle, Signal Feed-through; Fiber Type MM, SM, PM, DCF; 700-2100 nm; Number of Legs 2+1x1, 6+1x1; Pump Transmission Efficiency ≥80, ≥90%; RL >40 dB; Dimensions Ø3.0x55/65, 5 mm² x 60/65 mm

Gooch & Housego’s TFB-X tapered fiber bundle series of power combiners with passive or active signal feed-through provide a high-efficiency means of combining light from several multi mode (MM) sources into one fiber.

Gooch & Housego (G&H) proprietary manufacturing techniques allow the precise fusion of multi mode pump fibers to a signal feedthrough fiber and a dual clad, multi mode (MM), single mode (SM) or polarization maintaining (PM) output fiber. This provides high coupling efficiency over a wide pump wavelength range.

Active signal feed-through types feature inclusion of the splice between the passive and active signal fiber within the combiner housing, removing the need for an external splice and thus reducing potential back-scatter to the pump sources.

Available in standard (2+1)x1 or (6+1)x1 configurations, the TFB-X series combiners can be fabricated from a range of industry standard fibers for ease of splicing to commercially available laser diodes, signal and gain fibers. Custom variants using non-standard fibers including large mode area (LMA), large diameter (LDF) and active signal feed-through fibers are available on request, please contact AMS Technologies with your specific requirements.

Available Versions:

• 2+1x1 Multi Mode Power Combiner with Signal Feed-through (TFB-xxx21xXxx)
• 2+1x1 Multi Mode Power Combiner with PM Signal Feed-through (TFB-Pxx21xxxx)
• 2+1x1 Multi Mode Power Combiner with PM Signal Feed-through for 2 µm Operation (TFB-Pxxx1xxxx)
• 2+1x1 Multi Mode Power Combiner with Active Signal Feed-through (TFB-xxx21xXxx)
• 2+1x1 Multi Mode Power Combiner with Active PM Signal Feed-through (TFB-Pxx21xxxx)
• 6+1X1 Multi Mode Power Combiner with Signal Feed-through (TFB-xxx61xxxx)
• 6+1x1 Multi Mode Power Combiner with Signal Feed-through for 2 µm Operation (TFB-xxx61xxxx)
• 6+1X1 Multi Mode Power Combiner with PM Signal Feed-through (TFB-Pxx61xxxx)

Key Features:

• 1.0, 1.5, 1.9 to 2.1 µm Signal Feed-through Available
• All-Fiber Construction
• High Power Design
• Pump Input Wavelength: 750 to 1000 nm
• Signal Input Wavelength: 1030 to 2100 nm
• Number of Legs (Pump Inputs): 2+1x1, 6+1x1
• Custom Configurations Available
• High Coupling Efficiency
• Pump (MM) Transmission Efficiency: ≥80%, ≥90%
• Signal Transmission Efficiency: ≥80%, ≥90%, ≥93%
• PM Axis Maintained for PM Signal Feed-through Versions
• Pump Input Fiber: Multi Mode (MM), 105/125 µm
• Pump Input Fiber Numerical Aperture (NA): 0.15, 0.22
• Output Fiber: DCF Core 130, 125 µm/0.45 NA, DCF 10/125 µm 0.15/0.45 NA, Active DCF (Customer Specific)
• Pigtail Length: 0.5, 1, 2 m
• Return Loss (RL): >40 dB
• Dimensions: Ø3.0 x 55/65, 5 mm² x 60/65 mm

Applications: Cladding Pumped Fiber Lasers; Cladding Pumped Fiber Amplifiers; Telecoms; Medical; Biomedical; Industrial; Defense; IR Imaging; IR Counter Measures