圓形轉線性光纖束

圓形轉線性光纖束 Round-to-Linear Fiber Optic Bundles

• Fiber Bundles with Low-OH or High-OH Multimode Fiber
• One Linear and One Round Bundle End
• Optimized for Use with Spectrometers with an Entrance Slit
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詳細介紹
 Round-to-Linear Fiber Optic Bundles

  These fiber bundles contain 7 fibers arranged in a line configuration (linear) at one end and a circular configuration (round) at the other end. Round-to-linear fiber bundle cables are commonly used to increase the coupling efficiency into spectrometers and other optical devices that have an entrance slit. The linear end matches the shape of the entrance slit better than a single fiber or round bundle configuration and therefore increases the amount of light entering the device. The linear end can also be used as a line source of light.

  These round-to-linear fiber bundles use SMA905 connectors for compatibility with most spectrometers. They are built using our Ø105 µm or Ø200 µm core multimode fiber with either a high or a low hydroxyl ion (OH) content for use in the 250 - 1200 nm or 400 - 2400 nm range, respectively. For increased durability, these cables incorporate stainless steel protective tubing (FT05SS).


 
  • Features

  • One Linear and One Round End
  • Low- or High-OH, Ø105 µm or Ø200 µm Core Multimode Fiber
  • 2 m Long Cables with SMA905 Connectors
  • No Dark (Broken) Fibers
  • Linear End Matches the Entrance Slit of a Spectrometer for Higher Signal Levels
  • Linear End can Generate a Line Illumination Pattern
 
                      Linear Bundle End                                              Round Bundle End

 
 
End Face of a BFL105HS02 Fiber Bundle
Behind the 20 µm x 2 mm Entrance Slit of a 350-700nm Compact Spectrometer
 
 
 
  • Specification

Item #

BFL105HS02

BFL105LS02

BFL200HS02

BFL200LS02

Number of Fibers

7

Fiber Core Size

Ø105 µm

Ø200 µm

Linear End Fiber
Dimensions

0.90 mm x 0.13 mm

1.55 mm x 0.23 mm

Round End Effective
Core Diameter

355 µm

640 µm

Fiber NA

0.22a

Hydroxyl Ion Content

High OH

Low OH

High OH

Low OH

Wavelength Range

250 - 1200 nm

400 - 2400 nm

250 - 1200 nm

400 - 2400 nm

Fiber Attenuation Plot  

Length

2 +0.075/-0 m

Connectors

SMA905

Center Root-Mean-Square-Deviation

1.67 µm

1.09 µm

Center-to-Center Distance

125.38 µm ± 0.14 µm

220.00 µm ± 0.06 µm



 

The deviation from center is noted by Δx and is used to calculate the Root-Mean-Square-Deviation of any one individual fiber from the center line. The center-to-center distance is given by y.

  • The NA of the bundle is the same as that of the individual fibers.
  • The Root-Mean-Square-Deviation represents the sample standard deviation of the fiber's center compared to the center line of the bundle. This data is from a small sample group; slight variations will occur from fiber to fiber. 
  • The Center-to-Center Distances represents the distance between one fiber and its nearest neighbor. This data is from a small sample group; slight variations will occur from fiber to fiber.
 
  • Notice
When plugging the linear end of the bundle cable into the spectrometer or another device, the fiber array must be aligned with the entrance slit. For ease of alignment, the fiber array's axis is indicated by a line on the connector sleeve, as shown in the image below. Precise alignment of the bundle and slit is not critical, but misalignment of more than ±5° can cause a reduction in signal strength. In order to maximize signal intensity, we recommend rotating the bundle while monitoring light levels in the spectrometer; once optimized, tighten down the threaded portion of the SMA connector to lock the bundle in place. When using these bundles with our CCD Spectrometers, the fiber array should be oriented vertically.


An Engraved Mark on the Connector's Strain Relief Sleeve Indicates the Axis of the Linear Fiber Array

Each patch cable includes two rubber and two metal protective caps that shield the connector ends from dust and other hazards. Additional CAPM Rubber Fiber Caps and CAPSM Metal-Threaded Fiber Caps for SMA-terminated ends are also offered separately.

Please note that the fibers are not mapped between the two connector ends.