High Power SMA Fiber Cables

For High Power Diode Laser Pumping

Download PDF

WaveSource SMA fiber cables are manufactured using "air-gap technology" with free-standing fiber tips that are not in contact with any adhesives.

Coupling high power in glued standard SMA connectors leads to their rapid demise. The silica fiber is transparent to pump laser, can resist higher temperature, and has a much higher damage threshold comparing to adhesive. It can receive or emit higher laser power density without running into the risk of damage.

An alternative solution was sought after by some suppliers to allow the optical fiber to protrude out of the ferrule. However, the protruding fibers are easily damaged during handling and use. In addition if the ferrule has a slight misalignment with the entering laser beam, the adhesive will be evaporated by the high power laser that will initiate a catastrophic damage chain.

Our high-power SMA cables offer a viable alternative to the previous approaches. The optical fiber end faces do not protrude out of the connector end faces, the fibers are free standing and surrounded only by air. This ensures the coupling of high laser power without damage.

Adhesives are not used in the front part of the connector. In addition, metallic parts provide for the rapid conduction of heat.

SMA ferrule image by 100x microscope

Fiber tip image by 400x microscope

Features

  • Free standing, air-gapped fiber tip
  • Utilizes Air-Gap-Ferrule Technology
  • Low-OH Fiber with 0.22 NA
  • High centricity
  • Super polished fiber end-face
  • Operating Wavelength Range: 400 to 2200 nm

Applications

  • Fiber lasers and amplifiers
  • Fiber sensing
  • Materials processing
  • High power Laser surgery
  • LIDAR
Parameter Unit Specification
Connector Type SMA 905 on both fiber ends with air-gapped fiber tip technology without fiber protruding
Fiber Low OH fiber
Ferrule diameter mm 3.167 - 3.172
Outer diameter mm 9.5
Fiber core diameter mm 200 400 600 800
Cladding diameter mm 220 480 720 880
Cable length m Per customer specify ± 0.1
Fiber numerical aperture 0.22 ± 0.02
Fiber protective jacket PVC or stainless armed
Cable jacket diameter mm 3
Centricity mm <6
Long term bending radius mm 44 96 144 176
Short term bending radius mm 22 48 72 88
Damage threshold W 50 @ 980nm and 808nm
kW/cm2 50 @ 980nm and 808nm
Operating temperature C -50 -- 130

Go Back