Create an Account  |   Log In

View All »Matching Part Numbers


Your Shopping Cart is Empty
         

Multimode Fiber and Patch Cables with Lensed Tips


  • Graded-Index Multimode Fiber with Lensed Tip
  • Focuses to Ø25 µm Spot at 30 µm Working Distance
  • Available as Bare Fiber or Patch Cable
  • Custom Versions Available

LFM100

Lensed Tip

Scissor Cut

Application Idea

LFM100 Lensed Fiber Mounted in a MBT616D 3-Axis Stage and HFF001 Fiber Clamp for Use in a Fiber Coupling Application

FC/PC Connector

SMA Connector

LFM1F-1

LFM1S-1

Related Items


Please Wait
Key Specificationsa
Fiber Typeb GIF50E
Wavelength Range 800 - 1600 nm
Focused Spot Size Ø25 µm (Typ.)
Working Distance 30 µm (Typ.)
GIF50E Fiber Specificationsc
Numerical Aperture 0.200 ± 0.015
Core Diameter 50.0 ± 2.5 µm
Cladding Diameter 125.0 ± 1.0 µm
Coating Diameter 242 ± 5 µm
  • Please see the Specs tab for complete specifications.
  • Lensed fiber can be requested for other fiber types; please contact Tech Support with inquiries.
  • Specified for GIF50E Fiber Not Including the Lensed Tip
lensed fiber
Click to Enlarge
Comparison of Beam Output for Flat-Cleaved Tip and Lensed Tip

Features

  • GIF50E Graded-Index Multimode Fiber with Lensed Tip
  • Focus Light to Ø25 µm Spot at 30 µm Working Distance
  • Available as Bare Fiber or Patch Cable
  • Patch Cables are FC/PC (2.0 mm Narrow Key) or SMA Terminated on One End
  • Useful for Waveguide and Photodiode Coupling Applications
  • Manufactured Using Vytran® Fiber Processing Technology

Thorlabs' Multimode Lensed Fiber is a graded-index multimode fiber (Item # GIF50E) with a shaped tip on one end. Unlike light emitted from a flat cleaved fiber tip that diverges immediately, a fiber with a lensed tip will focus the light at a point in front of the tip. Each fiber provides a Ø25 µm spot at a 30 µm working distance. Lensed fibers are useful for applications such as coupling to and from waveguides, active device pigtailing, and waveguide packaging.

This lensed-tip fiber is available from stock as either a 1 m length of bare fiber with one scissor cut end or as a patch cable with a 2.0 mm narrow key FC/PC or SMA connector on one end. Patch cable versions are jacketed in Ø900 µm black Hytrel® tubing. The lensed tip is shipped with a protective plastic sleeve to prevent physical damage. Prior to use, the plastic sleeve should be removed and the tip cleaned gently using compressed air.

Lensed fibers are fabricated using Vytran® glass processing technology. Precise heating of the fiber end face provides a high degree of control over the curvature of the lens. Thorlabs is able to leverage our fiber processing experience to create lensed fibers using single mode, multimode, and polarization-maintaining fiber; please contact Tech Support to inquire about custom lensed fibers for your application.

Lensed Tip Specifications
Focused Spot Size Ø25 µm (Typ.)
Working Distance 30 µm (Typ.)
Taper Length 410 µm
Radius of Curvature 31 ± 1 µm
Insertion Loss 0.2 dB (Typ.)
Fiber Specificationsa
Fibera
Fiber Typea GIF50E
Wavelength Range 800 - 1600 nm
Numerical Aperture 0.200 ± 0.015
Core Diameter 50.0 ± 2.5 µm
Cladding Diameter 125 ± 1 µm
Coating Diameter 242 ± 5 µm
Core-Cladding Concentricity ≤1.5 µm
Coating-Cladding Concentricity ≤12 µm
Attenuation ≤2.3 dB/km @ 850 nm
≤0.6 dB/km @1300 nm
  • Specified for GIF50E Fiber Not Including the Lensed Tip
  • Lensed tips can be requested for other fiber types; please contact Tech Support with inquiries.
Physical Specifications
Item # LFM100 LFM1F-1 LFM1S-1
Fiber Termination Scissor Cut FC/PC,
2.0 mm Narrow Key
SMA
Fiber Length 1 +0.1 / -0.0 m
Stripped Fiber Lengtha 11 ± 1 mm
Tubing N/A Ø900 µm Black Hytrel®
Length without Tubingb N/A 5 ± 1 cm
Operating Temperature -60 to 85 °C
  • The length of fiber stripped to the cladding on the end with the lensed tip.
  • Length of fiber before the lensed tip without protective tubing. The LFM100 fiber does not have any protective Hytrel tubing.

Posted Comments:
cheng chen  (posted 2020-05-31 01:01:52.7)
what is the chromatic. aberration of this fiber lens ?
Georgy Onishchukov  (posted 2020-03-11 15:02:33.72)
What is the NA of the focused beam?
YLohia  (posted 2020-03-17 02:00:18.0)
Hello, due to comparable values for the core diameter, working distance. and focused spot size, measuring the NA is not quite straightforward for this fiber. I have reached out to you directly to discuss this further.

Multimode Fiber with Lensed Tip

  • 1 m of GIF50E Fiber with Lensed Tip
  • 11 ± 1 mm Stripped to Cladding on End with Lensed Tip
  • Other End is Scissor Cut

LFM100 Multimode Lensed-Tip Fiber is available from stock in 1 m lengths. The non-lensed, scissor cut end can be spliced into a setup if desired, or terminated with a connector using Thorlabs fiber termination kit.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
LFM100 Support Documentation
LFM100Multimode Lensed GIF50E Fiber, Ø25 µm Spot Size, 30 µm WD, Scissor Cut, 1 m
$101.85
Today

Multimode Patch Cables with Lensed Tips

  • GIF50E Fiber Patch Cables with Lensed Tip
  • 2.0 mm Narrow Key FC/PC or SMA Connector Options
  • 1 m Length
  • 11 ± 1 mm of Fiber Stripped to Cladding on End with Lensed Tip
  • Ø900 µm Black Hytrel Tubing

These multimode lensed-tip fiber patch cables are offered with either an FC/PC or SMA connector on the non-lensed end and Ø900 µm black Hytrel® tubing. On the end with the lensed tip, 5 ± 1 cm of the cable is left free of the tubing to expose the inner GIF50E fiber. The last 11 ± 1 mm of fiber before the lens is stripped to the cladding.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
LFM1F-1 Support Documentation
LFM1F-1Customer Inspired! Ø50 µm, 0.20 NA, Lensed Tip to FC/PC Fiber Patch Cable, Ø25 µm Spot Size, 30 µm WD, 1 m
$132.98
Lead Time
LFM1S-1 Support Documentation
LFM1S-1Customer Inspired! Ø50 µm, 0.20 NA, Lensed Tip to SMA Fiber Patch Cable, Ø25 µm Spot Size, 30 µm WD, 1 m
$136.60
Today
Log In  |   My Account  |   Contact Us  |   Privacy Policy  |   Home  |   FAQ  |   Site Index
Regional Websites:East Coast US | Europe | Asia | China | Japan
Copyright © 1999-2020 Thorlabs, Inc.
Sales: 1-973-300-3000
Technical Support: 1-973-300-3000


High Quality Thorlabs Logo 1000px:Save this Image