Thorlabs offers a standard 62.5 μm/125 μm Graded-Index Fiber (GIF625) and a graded index fiber designed for high temperatures and harsh environments (GIF625HT). GIF625 is offered pre-spooled in lengths of 10 m, 100 m or 1 km. In addition, Thorlabs now offers GIF50, a 50 μm core graded index fiber with a mechanically strippable acrylate coating (245 μm outer diameter). GIF50 supports serial transmission rates of 10 Gb/s over distances of 300 m in the 850 nm window.
Item #
GIF50
GIF625
GIF625HT
Core Diameter
50.0 ± 2.5 µm
62.5 ± 3 µm
62.5 ± 3 µm
Cladding Diameter
125.0 ± 2 µm
125 ± 2 µm
125 ± 2 µm
Coating Diameter
245 ± 5 µm
245 ± 10 µm
250 ± 20 µm
Core-Clad Offset
≤1.5%
<3 µm
<3 µm
Coating Material
Acrylate
-
Thermally Cured Silicone
Operating Temperature
-60 to +85 °C
-60 to +85 °C
-65 to +200 °C
Operating Wavelength
750 - 1450 nm
800 - 1350 nm
800 - 1350 nm
Numerical Aperture
.200 ± 0.015
0.275 ± 0.015
0.275 ± 0.015
Attenuation
≤2.5 dB/km @850 nm 0.8 dB/km @1300 nm
2.7 to 3.2 dB/km @850 nm 0.6 to 0.9 dB/km @1300 nm
>3.0 dB/km @850 nm >0.9 dB/km @1300 nm
Bandwidth
≥2000 MHz•km @850 nm*
160 to 400 MHz•km @850 nm 300 to 1200 MHz•km @1300 nm
>160 MHz•km @850 nm >500 MHz•km @1300 nm
* Laser Source (For LED sources at 850 nm the overfilled bandwidth is ≥1500 MHz•km while at 1300 nm the overfilled bandwidth is ≥500 MHz•km)
Below are graphs fo the Index of Refraction as a function of radial displacement from the center of the core for two graded-index fibers. To view the raw data in an Excel file, please click here.
Custom Patch Cable Service with Same Day Shipment
Thorlabs stocks the largest selection of single mode and multimode optical fibers in the photonics industry. Simply use the form below to receive a quote on a custom patch cable. Once filling out the quote request, a member of our Technical Support team will e-mail you a quote with a lead time.
Custom patch cables can be shipped the same day they are ordered provided the following criteria* are met:
Order Does Not Exceed 5 Cables
Each Cable Does Not Exceed 20 m in Length
Order is Placed Before 12:00 pm Eastern Standard Time
*Other restrictions may apply. Not available with PCF or PM fibers.
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Posted Comments:
Poster: klee
Posted Date: 2009-12-07 18:40:50.0
A response from Ken at Thorlabs to rajesh: The index profile was measured at 546nm. Unfortunately, the manufacturer cannot measure if at 488nm.
Poster: rajesh
Posted Date: 2009-12-02 07:55:02.0
The refractive index profiles are extremely useful. I have a couple of more questions regarding the refractive index profile of GIF625. Could you also mention the wavelength of light used for the measurement of the profile. I am interested to use the fibre at a wavelength of 488nm or close to 488nm. Could you kindly provide the index profiles at or close to 488nm.
Regards,
Rajesh
Poster: Tyler
Posted Date: 2009-01-26 08:20:29.0
A response from Tyler at Thorlabs to shalin: I forwarded your request to the technical support department last week. At which time, they informed me that your request was approved and that they would be contacting you for shipping information. I hope that these fiber samples help you in your research and if we can be of further assistance, please let us know.
Poster: shalin
Posted Date: 2009-01-21 04:11:50.0
Hello, I am from National University of Singapore. Could you please provide us a small length of GIF50 and GIF625 as a sample?
Thanks, Shalin (Graduate Student, Optical Bioimaging Lab).
Poster: chenav
Posted Date: 2008-12-16 12:55:34.0
Hello,
We are looking to purchase a spool of multi-mode, graded-index fiber for working at 532nm. We are especially interested in fibers with an allowed bending radius as low as possible. Please recommend which of your products would be best fit and add details on their bending radii.
Regards,
Chen Avinadav
Rafael Ltd.
Poster: Laurie
Posted Date: 2008-09-17 14:07:23.0
Response from Laurie at Thorlabs to hclee2: Thank you for our interest in our graded-index fiber. Someone from our technical support staff with be contacting you shortly with the requested information. In addition, we will add to the web information concerning the index of refraction as a function of radial distance in the very near future.
Poster: hclee2
Posted Date: 2008-09-15 10:29:48.0
Hi, I am interesting if you could provide the approximate refractive index distribution between n1, ng and n2 versus cross section distance. This informaion would be helpful for running this GIF in the simulation model to determine the appropriate length. Therefore, if there is any advanced infomation, please email to me. Thanks
Poster: Laurie
Posted Date: 2008-07-09 08:55:22.0
Response from Laurie at Thorlabs to wblee21: The GIF625HT will not work for the 200 - 800 nm wavelength range, but we have a new fiber that will be available soon (HPSC10) that covers the wavelength range from 280 to 750 nm. Unlike the GIF625HT, this new fiber will be a step-index fiber instead of a graded-index fiber.
Poster: wblee21
Posted Date: 2008-07-09 03:20:49.0
Can I use this GIF625HT for 200nm - 800nm also even if you mention this product operating wavelength 800-1350nm
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GIF50
-
Graded Index Fiber, 50um Core/125um Cladding, 0.200 NA
