Fiber, Parts & Tools

Fiber Geometry Measurement

Fiber Geometry Measurement

Keywords: Fiber analiser, fiber mode analyser, fiber geometry mesurement

Fiber geometry measurement systems are the complete solution for measuring the dimensions of standard and specialty fiber in both production and R&D environments. Fiber glass geometry for fibers up to 400-1000 µm diameter.

Fiber & Array Geometry Measurement Systems

 

1.     STAR-FGC-GT & STAR-FGC-GS Fiber Glass Geometry Measurement System 

The STAR-FGC range is the complete solution for measuring the dimensions of standard and specialty fiber in both production and R&D environments. STAR-FGC-GT – fiber glass geometry for fibers up to 400 µm diameter. STAR-FGC-GS – fiber glass geometry for fibers up to 1000 µm diameter. 

The darkfield illumination system allows the software to show a clear live image of the end face of the fiber by illuminating the end face of the fiber and imaging the reflected light. This allows users to inspect the end face of the fiber whilst taking geometry measurements. The darkfield method of fiber geometry measurement is supported by both NPL in the UK and NIST in the USA. 

The STAR-FGC comes with an efficient software package containing controls to switch between reflection and transmission mode. This allows users to quickly and easily get both core and cladding geometry measurements including diameter, non-circularity and concentricity. The software contains measurement templates for all standard telecoms fibers, however users can also create their own. This allows the measurement of many special fiber types including dual clad fiber, bend insensitive fiber, multicore fibers and many more. 

Features & Benefits

  • Measures the widest range of fiber sizes and types – single unit solution means less bench space, reduced training

  • Standards compliant – calibrated to international standards, ensuring confidence in its accuracy

  • Production ready – reliable, repeatable, operator-independent results in seconds 

Specifictions


STAR-FGS-GT*

STAR-FGC-GS**

Optical



Max field of View

600 µm

1200 µm

Fiber Illumination – Reflection

Darkfield illumination, 850nm LED

Fiber Illumination - Transmission

Mulitple LED array, 850nm

Repeatability

Single   mode

Multi   mode

Multi   mode

Core Diameter

< 0.05 µm

< 0.08 µm

< 0.1 µm

Cladding Diameter

< 0.05 µm

< 0.05 µm

< 0.25 µm

Core Non-circularity

< 1.0%

< 0.5%

< 0.05%

Cladding Non-circularity

< 0.1%

< 0.1%

< 0.1%

Core-to-Cladding Concentracity

< 0.06 µm

< 0.05 µm

< 0.05 µm

Measurement   Capability

Measurement Time

< 10 seconds (excluding fiber prep)

Fiber Diameter

Up to 400 µm

Up to 1000 µm

Special Fibers

Dual clad, octagonal, PM, Multicore, PCF, etc.

Physical

Weight

11kg ( with carry case 33kg)

Size

0.5 x 0.5 x 0.2

Operating Temp

0oC to + 50oC

Humidity

5%- 95% relative, non-condensing

Computer Requirements

All FGC systems are supplied with a desktop computer   running up-to-date windows operating system

Data Interface

2 x USB3.0 (USB B to USB A: 2m cable supplied)

  • * Repeatability is measured on the STAR-FGC-GT using a single 125 µm fiber without removing it from the unit, the repeatability specifications are only applicable to OM1, OM2 and singlemode fibers.

  • ** Repeatability is measured on the STAR-FGC-GS using a single 540/600 µm fiber without removing it from the unit 

Ordering Information

Part number

Description

STAR-FGC-GT

Fiber Glass Geometry System for measurement of optical fibers with diameters   up to 400 µm. Including optical unit, fiber handling bench, cables, software   package; desktop computer; pair of Arden holders suitable for 250 µm diameter   coated fiber.

STAR-FGS-GS

Fiber Glass Geometry System for measurement of optical fibers with   diameters up to 1000 µm. Including optical unit, fiber handling bench,   cables, software package; desktop computer; pair of Arden holders suitable   for 400 µm diameter coated fiber.

STAR-FG-H-250

Pair of Arden FGC fiber holders with 250 µm V-groove, suitable for 250   µm diameter coated fiber

STAR-FG-H-400

Pair of Arden FGC fiber holders with 400 µm V-groove, suitable for 400   µm diameter coated fiber

STAR-FG-H-600

Pair of Arden FGC fiber holders with 600 µm V-groove, suitable for 600   µm diameter coated fiber

STAR-FG-H-800

Pair of Arden FGC fiber holders with 800 µm V-groove, suitable for 800   µm diameter coated fiber

STAR-FG-H-1000

Pair of Arden FGC fiber holders with 1000 µm V-groove, suitable for   1000 µm diameter coated fiber

STAR-FG-H-CUST

Pair of Arden FGC fiber holders with customer defined V-groove   diameter

STAR-FGC-GUEW3

FGC-Glass geometry system, extended warranty covering parts and labour   for 3 years from purchase, return to base. Cover excludes camera.

STAR-FGC-GUEW5

FGC-Glass geometry system, extended warranty covering parts and labour   for 5 years from purchase, return to base. Cover excludes camera.

STAR-FGC-PMI

PM illuminator designed for use with the FGC

2.     STAR-FGC-GA Array Geometry Measurement System

The STAR-FGC-GA is the ultimate solution for measurement and process control for V-groove array

production. With one unit, users can measure V-groove block geometry, core-to-core pitch

and core X & Y offset of multifiber arrays up to 15mm in width. With a 1200µm field of view

as well as an automated lateral stage for scanning along the entire width of the array, the

STAR-FGC-GA is the fastest and most flexible way to produce top quality V-groove arrays 

Features and Benefits

  • Measurement of core to core pitch, X-offset, Y-offset and V-groove block geometry.

  • Lateral adjustment stage and image stitching for measurement over a 15mm array width.

  • Flexible software can adjust for different fiber types (SM, PM, MM).

  • 1200µm field of view allows simultaneous measurement of up to 4 cores, decreasing overall measurement time.

  • Custom array holders available depending on customer requirements. 

Specifications

Optical

Optical STAR-FGC-GA

Repeatability

Core X/Y-offsets* < 0.1 µm

Core-core Distance* < 0.1 µm

Measurement Capability

Measurement Time < 1 minute (excluding fiber   preparation) for a 3-fiber array

Array Width Up to 15mm

Fiber Types Singlemode, Multimode, PM

Physical

Weight 13kg (with carry case 44kg)

Size 0.5m x 0.5m x 0.2m

Operating Temperature 0 – 50° C

Humidity 5% – 95%, relative, non-condensing

Data Interface 3 X USB 3.1 (USB B to USB A: 0.5m   cable supplied)

Computer Requirements All FGC systems are supplied   with a desktop computer

running up-to-date Windows operating system

Max Field of View

1200µm

Fiber Illumination – Reflection

Multichannel 525nm

Fiber Illumination – Transmission

Darkfield illumination, 525nm LED

3.     STAR-FGC-P Fiber Coating Geometry System

The STAR-FGC-P Fiber Coating Geometry System is the fast, reliable solution for measuring the geometry characteristics of optical fiber coatings.

The STAR-FGC-P provides a direct measurement of fiber coating geometry parameters including:

  • coating diameter,

  • coating non-circularity, and

  • coating-cladding concentricity.

It can handle fibers with a coating diameter from 100 µm to 260 µm, being able to measure outer and inner coating layers. 

The fast and user friendly nature of the STAR-FGC-P make it well suited to both production and R&D environments, maintaining excellent levels of repeatability and reliability. 

The STAR-FGC-P uses a novel liquid cell design that allows it to repeatably measure even very thin fibers, including polarisation maintaining (PM) fibers. 

The fiber under test is rotated through 360°, and measured at user-defined intervals, to minimise any measurement uncertainty caused by any asymmetry of the fiber. The ability to measure coatings in up to 36 different radial positions ensures the highest levels of accuracy and reliability for the measurement of diameter, circularity and concentricity. 

The STAR-FGC-P Fiber Coating Geometry System is fully standards compliant, and uses the side-view reference test method described in IEC-60793-1-21. The STAR-FGC-P analyses the side-view grey-scale intensity profile to determine the positions of the coating and cladding boundaries using high-speed video and image processing techniques. The fiber under test is rotated through 360°, and measured at user-defined intervals, to minimise any measurement uncertainty caused by any asymmetry of the fiber. 

Measurement Capability

Fiber Type

SM, MM, PM

Coating Material

Dual acrylate

Coating Diameter

100 µm to 260 µm

Layer Thickness

> 10 µm

Measurement Time*

< 10 s per angular position

Angular Positions

Customisable, 8 to 36

Repeatability**

Outer Coating Diameter

< 0.5 µm

Outer Coating Non-Circularity

< 0.5%

Inner Coating Diameter

< 0.8 µm

Inner Coating Non-Circularity

< 0.8%

Outer Coating-to-Cladding Concentricity

< 0.5 µm

Inner Coating-to-Cladding Concentricity

< 0.8 µm

Optical

Illumination – Side View

Darkfield, 525 nm

Max Field of View

580 µm

Image Sensor

1.1-inch CMOS, 4112 x 3008   pixels resolution

Exposure Range

0.1 ms to 100 ms exposure time

Physical

Weight

6 kg (with carry case 12 kg )

Size

0.5 x 0.2 x 0.2 m

Operating Temp***

10 – 30° C

Power Supply

15 V (external power supply   supplied)

Power Consumption

60 W

Computer Requirements

All FGC systems are supplied   with a computer running up-to-date Windows operating system

Data Interface

1 X USB 3.0 (USB B to U SB A: 1   m cable supplied)

  • *Analysing 100 scan lines and averaging 5 images

  • **Repeatability is measured using a 125/245 dual acrylate coated MM fiber sample over 12 angular positions without removing from the FGC-P

  • ***Performance specification validated at 22° C 

Part number

Description

STAR-FGC-P

STAR-FGC-P Fiber Coating   Geometry System for measurement of optical fibers with diameters up to 260   µm. Including optical unit; 3 x STAR-FGC-P-FTA-245 tube assemblies; 3 x STAR-FGC-P-FTA-200   tube assemblies; 3 x STAR-FGC-P-FTA-100 tube assemblies; 3 x STAR-FGC-P-GLA   tube packs; 1 x STAR-FGC-P-IL-1.5840 bottle of immersion liquid; 1 x STAR-FGC-P-TM   tube storage block; 1 x STAR-FGC-P-CC carrying case; cables; computer   pre-installed with system software

STAR-FGC-P-GLA

Glass tubes, pack of 10,   replacement for use in STAR-FGC-P-FTA Fiber Tube Assembly

STAR-FGC-P-IL-1.5600

Bottle of Immersion liquid, 10   ml, ( Refractive Index = 1.5600) for refilling STAR-FGC-P tube assembly

STAR-FGC-P-IL-1.5840

Bottle of Immersion liquid, 10   ml, ( Refractive Index = 1.5600) for refilling STAR-FGC-P tube assembly

STAR-FGC-P-IL-1.6000

Bottle of Immersion liquid, 10   ml, ( Refractive Index = 1.6000) for refilling STAR-FGC-P tube assembly

STAR-FGC-P-FTA-245

STAR-FGC-P Fiber Tube Assembly   for 245 µm coatings, contains glass tube plus upper and lower fiber guides   with 270 µm ferrule fitted

STAR-FGC-P-FTA-200

STAR-FGC-P Fiber Tube Assembly   for 200 µm coatings, contains glass tube plus upper and lower fiber guides   with 230 µm ferrule fitted

STAR-FGC-P-FTA-100

STAR-FGC-P Fiber Tube Assembly   for 100 µm coatings, contains glass tube plus upper and lower fiber guides   with 126 µm ferrule fitted

STAR-FGC-P-FTA-CUST

STAR-FGC-P Fiber Tube Assembly   for custom fiber coatings, contains glass tube plus upper and lower fiber   guides with custom ferrule fitted

STAR-FGC-P-TM

STAR-FGC-P glass tube storage block,   for holding 6 tube assemblies

STAR-FGC-P-GUEW3

STAR-FGC-P extended warranty   covering parts and labour for 3 years from purchase, return to base. Cover   excludes camera

STAR-FGC-P-GUEW5

STAR-FGC-P extended warranty   covering parts and labour for 5 years from purchase, return to base. Cover   excludes camera

STAR-FGC-P-CC

STAR-FGC-P rigid carrying case

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