Achromat Lens Fiber Optical Collimator 1550nm 2M Single Fiber SMF 4mm OD

Achromat Lens Fiber Collimator 1550nm 2M Single Fiber SMF 4mm OD, Pigtail type

Fibermart offers a complete line of fiber optical collimators and focusers with low backreflection,  designed  to  collimate  or  focus  light  exiting  a  fiber  to  adesired beam diameter or spot size.  By utilizing diffraction limited lenses,spot sizes of a few microns can be achieved.  These devices can be usedwith  laser  diodes,  photodiodes,  acousto-optic  modulators  and  other  fiber optic devices. 

Collimators and focusers can be used as matched pairs tocouple light in and out of optical devices.  This makes them ideal for fiber packaging of devices. For  collimators,  the  collimated  beam  diameter  (BD)and  full  divergence angle (DA)depends upon the focal length of the lens (f), the core diameter(a),   and   the   fiber   numerical   aperture   (NA).The   collimated   beamcharacteristics are given by:BD(mm) = 2 x f(mm) x NADA(mrad) = a(ȝm) / f(mm)When  using  the  above  formulae,  please  exercise  caution.   

Different definitions for the numerical aperture are used by fiber manufacturers.  Forinstance,  definitions  based  on  50  percent,  13.5  percent  (1/e2),  5  percent,and 1 percent intensity levels are all used. FM  standard  tables  list  the  definitions  used  for  each  fiber  type,  aswell as conversion factors to convert values to 1/e2 values.  Fibermart uses1/e2 definitions for its calculations of the beam diameter wherever possible.

FEATURES:

•High power handling

•Rugged and compact design

•Low insertion loss•Low backreflection

•Wide wavelength range

•Wide range of beam diameters•GRIN, aspheric, achromatic, plano-convex, andbiconvex lenses available•Singlemode, multimode, and polarization maintainingFiber versions•Diffraction limited optics

•LOW COST!

APPLICATIONS:

•Fiber optic device packaging, including WDM’sSplitters, and integrated optics

•Source to fiber coupling•Fiber to detector coupling

•OCT systems

SPECIFICATIONS:

•Wavelength:180nm - 2000nm •Backreflection:-35, -40, -50, and -60dB

•Polarization Extinction ratios:20, 25, or 30dB

•Beam Diameters:0.2 to 22mm•Spot size:As small as <5 microns

•Wavefront distortion: O4 to O10

•Insertion Loss:d0.6 dB for 60mm separationd0.3 dB for 10mm separation

Specifications

Sample Picture

Dimension