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Polarization-Maintaining Fiber


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Polarization-Maintaining Fiber

Custom Fiber Patch Cables  Optical Fiber Manufacturing

Features

  • Maintain Polarization State of Input
  • Panda or Bow-Tie Style Fiber
  • Stock and Custom Patch Cords Also Available

Thorlabs offers both Panda and bow-tie style Single Mode Polarization-Maintaining (PM) fiber. The two styles are named based on the stress rods used. Stress rods run parallel to the fiber's core. Panda stress rods are cylindrical, while bow-tie uses trapezoidal prism stress rods. For the average user, these two styles are interchangeable. Panda style fibers have historically been used in telecom applications, as it is easier to maintain uniformity in their cylindrical stress rods over very long lengths when manufacturing.

Although bow-tie fibers are not traditionally used in telecom applications, we do offer specialized bow-tie fibers. The HB980T fiber has been optimized for telecom use with polarization multiplexing of EDFA pump lasers. Additionally, the HB1250T and HB1500T are well suited for both laser and integrated optic chip pigtailing.

Applications such as Fiber Optic Gyroscopes (FOG) can benefit from the HB800G bow-tie fiber. FOGs require optimal performance over a wide temperature range, short beat lengths, and high birefringence. Conventional PM fibers use a polymer coating, which become less flexible at lower temperatures. This causes undesired stress in the fiber and degrades its performance at low temperatures. Our HB800G integrates a dual-layer acrylic coating that increases the low temperature performance (Temperature Performance Plot).

Polarization-Maintaining Fiber, Panda Style

Item #Wavelength
Range
MFDaNAbCutoffAttenuationBeat LengthCladding
Diameter
Coating
Diameter
Minimum
Bend Radiusc
Strip
Tool
PM-S350-HP350 - 460 nm2.3 μm @ 350 nm0.12≤340 nmN/A1.5 mm @ 350 nm Ø125 ± 2 µmØ245 ± 15 µm13 mmT06S13
PM-S405-XP400 - 680 nm3.6 ± 0.5 μm @ 405 nm
5.0 ± 0.5 μm @ 630 nm
380 ± 20 nm≤30.0 dB/km @ 488 nm
≤30.0 dB/km @ 630 nm
2.0 mm @ 405 nm
PM460-HP460 - 700 nm3.3 ± 0.5 µm @ 515 nm420 ± 30 nm<100 dB/km @ 488 nm1.3 mm @ 460 nm
PM-S630-HP630 - 780 nm4.2 ± 0.5 µm @ 630 nm580 ± 40 nm<12 dB/km @ 630 nm4.7 mm @ 630 nm
PM630-HP620 - 850 nm4.5 ± 0.5 μm @ 630 nm570 ± 50 nm<15 dB/km @ 630 nm1.8 mm @ 630 nm
PM780-HP770 - 1100 nm5.3 ± 1.0 µm @ 850 nm710 ± 60 nm<4 dB/km @ 850 nm2.4 mm @ 850 nm
PM980-XP970 - 1550 nm6.6 ± 0.7 µm @ 980 nm920 ± 50 nm≤2.5 dB/km @ 980 nm≤2.7 mm @ 980 nm
PM1300-HP1270 - 1625 nm9.5 ± 1.0 µm @ 1300 nm0.131200 ± 70 nm<1.0 dB/km @ 1300 nm≤4.0 mm @ 1300 nm
PM14XX-HP1390 - 1625 nm9.8 ± 0.8 µm @ 1450 nm1320 ± 60 nm<1.0 dB/km @ 1450 nm≤4.7 mm @ 1450 nm
PM1550-XP1440 - 1625 nm9.9 ± 0.5 µm @ 1550 nm0.1251370 ± 70 nm<1.0 dB/km @ 1550 nm≤5.0 mm @ 1550 nm
PM20001850 - 2200 nm8.0 µm @ 1950 nm0.201720 ± 80 nm≤11.5 dB/km @ 1950 nm
≤22.5 dB/km @ 2000 nm
5.2 mm @ 1950 nm
  • Mode Field Diameter (MFD) is specified as a nominal value. It is diameter at the 1/e2 power level in the near field. For more information, please see the MFD Definition tab above.
  • Numerical Aperture (NA) is specified as a nominal value.
  • Minimum bend radius for mechanical reliability.

Polarization-Maintaining Fiber, Bow-Tie Style

Item #Design Wavelength(s)aMFDbNACutoffAttenuationBeat LengthcCladding DiameterCoating DiameterStrip Tool
HB800G830 nm4.2 µm0.14 - 0.18680 - 780 nm<5 dB/km<1.5 mmØ80 ± 1 µm170 µm ± 5%N/A
HB980T980 nm6.0 µm0.13 - 0.15870 - 970 nm<3 dB/km<2 mmØ125 ± 1 µm245 µm ± 5%T06S13
HB1250T1310 nm9.0 µm0.11 - 0.131100 - 1290 nm<2 dB/km<2 mmØ125 ± 1 µm400 ± 5%N/A
HB1500T1550 nm10.5 µm0.11 - 0.131290 - 1540 nm<2 dB/km<2 mmØ125 ± 1 µm400 ± 5%N/A
  • The fiber will transmit the TEM00 mode at wavelengths up to approximately 200 nm longer than the cutoff wavelength.
  • Mode Field Diameter (MFD) is a nominal, calculated value, estimated at the operating wavelength(s) using a typical value of numerical aperture and cut-off wavelength.
  • The Beat Length is measured at 633 nm for all HB fiber types. To a first approximation, beat length scales directly with operating wavelength.

Definition of the Mode Field Diameter

The mode field diameter (MFD) is one measure of the beam width of light propagating in a single mode fiber. It is a function of wavelength, core radius, and the refractive indices of the core and cladding. While much of the light in an optical fiber is trapped within the fiber core, a small fraction propagates in the cladding. For a Gaussian power distribution, the MFD is the diameter where the optical power is reduced to 1/e2 from its peak level.

Measurement of MFD
The measurement of MFD is accomplished by the Variable Aperture Method in the Far Field (VAMFF). An aperture is placed in the far field of the fiber output, and the intensity is measured. As successively smaller apertures are placed in the beam, the intensity levels are measured for each aperture; the data can then be plotted as power vs. the sine of the aperture half-angle (or the numerical aperture).

The MFD is then determined using Petermann's second definition, which is a mathematical model that does not assume a specific shape of power distribution. The MFD in the near field can be determined from this far-field measurement using the Hankel Transform.

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Posted Comments:
Poster: tcohen
Posted Date: 2012-08-15 10:07:00.0
Response from Tim at Thorlabs: Thank you for your inquiry. We are accumulating data on the dispersion at this wavelength and I will contact you to keep you updated with the results.
Poster: leaf
Posted Date: 2012-08-14 08:45:08.0
Please send me the dispersion data for PM780-HP and PM980-XP around 1060 nm. Thanks!
Poster: Mojtaba.Mansourabadi
Posted Date: 2012-07-14 12:00:55.0
Hi, I need the following parameters: 1- Core Diameter 2- Core Refractive Index 3- Cladding Refractive Index
Poster: andreas.bollmann
Posted Date: 2012-06-19 15:05:59.0
Hi, can you give me the dispersion curve of PM980-XP around 1064 nm? Best regards.
Poster: tcohen
Posted Date: 2012-06-19 09:55:00.0
Response from Tim at Thorlabs: Thank you for contacting us! I have sent you the dispersion data.
Poster: tcohen
Posted Date: 2012-04-09 12:17:00.0
Response from Tim at Thorlabs: Thank you for your feedback! I have contacted you with some dispersion data.
Poster: yequnz
Posted Date: 2012-04-06 14:36:31.0
I want to the chromatic dispersion and polarization-mode dispersion at the wavelength around 700nm. Thanks.
Poster: bdada
Posted Date: 2011-10-20 14:26:00.0
Response from Buki at Thorlabs: Thank you for your feedback. We are working on adding more information to our website. We have contacted you with the dispersion curve for the 780-HP fiber. Since the fundamental waveguide design is the same, the data should provide a good estimate.
Poster: kristian.altmann
Posted Date: 2011-10-12 11:18:33.0
Hi, I just want to ask about the dispersion curve for the PM780-HP. Best Regards
Poster: jjurado
Posted Date: 2011-07-14 09:32:00.0
Response from Javier at Thorlabs to delosrey: I will contact you directly with a dispersion curve for the PM780-HP fiber in the 600-1000 nm range.
Poster: delosrey
Posted Date: 2011-07-13 15:14:23.0
Hi, I just want to ask about the dispersion curve for the PM780-HP. I plan to use this in my set-up but I want to make sure that I could still recover the 65fm pulse width of my input beam.
Poster: bdada
Posted Date: 2011-06-24 12:41:00.0
Response from Buki at Thorlabs: Thank you for your feedback. We apologize for the inconsistency. The specification sheet is correct, so the cut off wavelength for the PM460-HP is 410 +/- 40nm. We will update the specification tables on the web page.
Poster:
Posted Date: 2011-06-23 19:30:04.0
Spec sheet shows 410 ± 40 nm for the PM460-HPs cutoff wavelength, but the web consistently shows 420 ± 30 nm. Which is correct?
Poster: tor
Posted Date: 2011-01-10 15:15:06.0
Response from Tor at Thorlabs to zyan: Thank you for your request. The cut-off is defined in this context as a lower-bound. PM460-HP, PM-S630-HP, and PM630-HP work for 632.8-nm input. Panda-style fibers have historically been used in telecom applications, as it is easier to maintain uniformity in their cylindrical stress rods over very long lengths when manufacturing. The average user can use both types interchangeably. I will contact you for further details so I can generate a formal quotation.
Poster: tor
Posted Date: 2011-01-10 14:50:52.0
Response from Tor at Thorlabs to Keli: Thank you for your interest in our PM fiber. The HP designation does not refer to power-handling capabilities of the fiber. The typical guideline for the damage threshold of SM fiber is 10 mW/µm² or (1 MW/cm²) for CW and 1 GW/cm² for 10-ns pulses.
Poster: zyan
Posted Date: 2010-12-14 13:53:01.0
Hi, How do you define cut-off, it looks that the cut-off mismatches the designed frequency. For example, can I use 632.8 nm wavelength for this fiber. Secondly, do you have any connectorized fiber. How can we access to this service. Obvious it requires much sophisticated equipment to do FC/PC connector with such short wavelength and small core diameter ones. How can we link this request to the fibers. Third, any reason for Bow-Tie versus Panda? Thank, ZY
Poster: keli
Posted Date: 2010-12-13 11:53:04.0
What dose HP in the item number mean? What is its highest power tolerance? Thanks.
Poster: tor
Posted Date: 2010-12-10 08:23:14.0
Response from Tor at Thorlabs to Mirko: We are happy to provide MFD data for specific production runs upon request. Nufern employs the same MFD measurement technique as described in this document: www.corning.com/WorkArea/downloadasset.aspx?id=7909 . I will contact you directly to help you find specific MFD data.
Poster: mirko.uebernickel
Posted Date: 2010-12-09 03:30:14.0
Dir sir or madam, please give me some detailed information about the defintion of the mode-field-diameter of the fiber pm980. The exact diameter definition is needed for calculations with this product. Best regards. Mirko Uebernickel
Poster: Javier
Posted Date: 2010-06-17 09:54:22.0
Response from Javier at Thorlabs to c.j.lee: the variation in the polarization axis orientation is most likely due to a mechanical shift of your setup over time, rather than to phenomena in the fiber itself. I will contact you directly to discuss this further.
Poster: c.j.lee
Posted Date: 2010-06-17 04:23:38.0
We are currently using your Panda style PM fibres in a polarization setup. We have noticed that over time, the orientation of the polarization axis of the fibre varies by about 3°. Is this expected, or is it more likely that our polarization state on the input is not what we think it is?
Poster: Adam
Posted Date: 2010-04-26 14:59:02.0
A response from Adam at Thorlabs to yekaterinala: We can offer an extra 2% of the price of the HB980T and the PM980-XP when 300 or 500m are orders. I will contact you directly to see if you are interested in a quotation.
Poster: yekaterinala
Posted Date: 2010-04-25 23:22:53.0
Please let me know meter price for HB980T for 300m and 500m Thanks Yekaterina yekaterinala@mvphotonics.com
Poster: yekaterinala
Posted Date: 2010-04-25 23:18:42.0
Hi, Please let me know price per meter for PM980-XP for 300m and 500m length. Thanks, Yekaterina yekaterinala@mvphotonics.com
Poster: Laurie
Posted Date: 2009-01-28 16:36:30.0
Response from Laurie at Thorlabs to chan0753: Thank you for your interest in our PM single mode fibers. Currently, we do not have a panda-style, PM, single mode fiber for the entire visible range. I will have an applications engineer contact you directly to discuss your specific application and determine if we have an appropriate fiber for you.
Poster: chan0753
Posted Date: 2009-01-28 10:35:52.0
Hi, I am interested in the polarization maintaining single-mode fibers (Panda style, pure silica core) for the range in 400nm -700nm. Do you mind giving me the more detailed absorption spectra of those fibers to help me decide which one to get? Thanks, Wing
Poster: Tyler
Posted Date: 2009-01-15 08:31:45.0
A response from Tyler at Thorlabs to guuptasengupta: Thank you for your feedback. Thorlabs is dedicated to providing a comprehensive line of photonics components and instruments. If you have any product needs that we currently don’t fill, please let us know as we are always looking for ways to improve our product line so that scientists can spend more time in the lab and less time looking for the proper equipment.
Poster: guuptasengupta
Posted Date: 2009-01-15 01:27:54.0
it is the only supplier and proved to be the genuine supplyer of the research based equipments
Poster: Laurie
Posted Date: 2009-01-05 16:34:23.0
Response from Laurie at Thorlabs to msaffman: Thank you for your interest in our single mode PM fiber. Currently, we do not offer as a stock item any PM fibers for the 320 nm wavelength. However, if you provide us with additional specifications (length, NA, etc.), we will look into the possibility of obtaining this fiber as a special.
Poster: msaffman
Posted Date: 2009-01-05 12:49:49.0
Can you provide single mode polarization maintaining fiber for 320 nm wavelength light? I am looking for this fiber in lengths of at least 50 cm. Thanks, Mark Saffman
Poster: Tyler
Posted Date: 2008-09-12 14:00:03.0
A response from Tyler at Thorlabs to david.rahmlow: The nominal NA of the FS-LS-4616 fiber is 0.13. Thank you for your interest in our fiber products.
Poster: david.rahmlow
Posted Date: 2008-09-11 14:18:37.0
Whats the NA of the FS-LS-4616 fiber? Thanks- --- Dave
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Polarization-Maintaining Fiber, Panda-Style
Panda PM Fiber Cross Section
Click for Details

Panda-Style PM Fiber Cross Section
  • Wavelengths from 350 to 2200 nm
  • PM-S350-HP, PM-S405-XP, and PM-S630-HP Feature Pure Silica Core
Item # Wavelength Range MFDa NAb Cutoff Attenuation
PM-S350-HP 350 - 460 nm 2.3 µm @ 350 nm 0.12 <340 nm N/A
PM-S405-XP 400 - 680 nm 3.6 ± 0.5 µm @ 405 nm
5.0 ± 0.5 µm @ 630 nm
0.12 380 ± 20 nm ≤30.0 dB/km @ 488 nm
≤30.0 dB/km @ 630 nm
PM460-HP 460 - 700 nm 3.3 ± 0.5 µm @ 515 nm 0.12 410 ± 30 nm <100 dB/km @ 488 nm
PM-S630-HP 630 - 780 nm 4.2 ± 0.5 µm @ 630 nm 0.12 580 ± 40 nm <12 dB/km @ 630 nm
PM630-HP 620 - 850 nm 4.5 ± 0.5 µm @ 630 nm 0.12 570 ± 50 nm <15 dB/km @ 630 nm
PM780-HP 770 - 1100 nm 5.3 ± 1.0 µm @ 850 nm 0.12 710 ± 60 nm <4 dB/km @ 850 nm
PM980-XP 970 - 1550 nm 6.6 ± 0.7 µm @ 980 nm 0.12 920 ± 50 nm ≤2.5 dB/km @ 980 nm
PM1300-HP 1270 - 1625 nm 9.5 ± 1.0 µm @ 1300 nm 0.13 1200 ± 70 nm <1.0 dB/km @ 1300 nm
PM14XX-HP 1390 - 1625 nm 9.8 ± 0.8 µm @ 1450 nm 0.13 1320 ± 60 nm <1.0 dB/km @ 1450 nm
PM1550-XP 1440 - 1625 nm 9.9 ± 0.5 µm @ 1550 nm 0.125 1370 ± 70 nm <1.0 dB/km @ 1550 nm
PM2000 1850 - 2200 nm 8.0 µm @ 1950 nm 0.20 1720 ± 80 nm <11.5 dB/km @ 1950 nm
<22.5 dB/km @ 2000 nm
  • Mode Field Diameter (MFD) is specified as a nominal value. It is the diameter at the 1/e2 power level in the near field. For more information, please see the MFD Definition tab above.
  • Numerical Aperture (NA) is specified as a nominal value.
Stock PM Patch Cable Selection Guide
Fiber Type PM-S405-XP PM460-HP PM630-HP PM780-HP PM980-XP PM1300-HP PM1550-XP PM2000
FC/PC to
FC/PC
P1-405BPM-FC P1-488PM-FC P1-630PM-FC
P1-630PMAR
P1-780PM-FC
P1-780PMAR
P1-980PM-FC P1-1064PM-FC
P1-1064PMAR
P1-1310PM-FC P1-1550PM-FC
P1-1550PMAR
P1-2000PM-FC
FC/APC to
FC/PC
P5-405BPM-FC P5-488PM-FC P5-630PM-FC
P5-630PMAR
P5-780PM-FC
P5-780PMAR
P5-980PM-FC P5-1064PM-FC
P5-1064PMAR
P5-1310PM-FC P5-1550PM-FC
P1-1550PMAR
P5-2000PM-FC
FC/APC to
FC/APC
P3-405BPM-FC P3-488PM-FC P3-630PM-FC P3-780PM-FC P3-980PM-FC P3-1064PM-FC P3-1310PM-FC P3-1550PM-FC P3-2000PM-FC
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
PM-S350-HP Support Documentation
PM-S350-HP 350-460 nm PM Fiber w/ Pure Silica Core, 2.3 µm MFD
$33.00
Per Meter
Volume Pricing
Today
PM-S405-XP Support Documentation
PM-S405-XP 400 - 680 nm PM Fiber w/ Pure Silica Core, 3.5 - 5.0 µm MFD
$30.00
Volume Pricing
Today
PM460-HP Support Documentation
PM460-HP 460-700 nm PM Fiber, 3.3 µm MFD
$27.30
Per Meter
Volume Pricing
Today
PM-S630-HP Support Documentation
PM-S630-HP 630-780 nm PM Fiber w/ Pure Silica Core, 4.2 µm MFD
$27.00
Per Meter
Volume Pricing
Today
PM630-HP Support Documentation
PM630-HP 620 - 850 nm PM Fiber, 4.5 µm MFD
$19.60
Per Meter
Volume Pricing
Today
PM780-HP Support Documentation
PM780-HP 770 - 1100 nm PM Fiber, 5.3 µm MFD
$19.60
Per Meter
Volume Pricing
Today
PM980-XP Support Documentation
PM980-XP 970 - 1550 nm PM Fiber, 6.6 µm MFD
$24.50
Per Meter
Volume Pricing
Today
PM1300-HP Support Documentation
PM1300-HP 1270 - 1625 nm PM Fiber, 9.5 µm MFD
$24.50
Per Meter
Volume Pricing
Today
PM14XX-HP Support Documentation
PM14XX-HP 1390 - 1625 nm PM Fiber, 9.8 µm MFD
$24.50
Per Meter
Volume Pricing
Today
PM1550-XP Support Documentation
PM1550-XP 1440 - 1625 nm PM Fiber, 9.9 µm MFD
$24.50
Per Meter
Volume Pricing
Today
PM2000 Support Documentation
PM2000 Customer Inspired! 1850 - 2200 nm PM Fiber, 8.0 µm MFD
$41.69
Per Meter
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Polarization-Maintaining Fiber, Bow-Tie Style
Bow-Tie PM Fiber Cross Section
Click for Details

Bow-Tie-Style PM Fiber Cross Section
  • Design Wavelengths from 830 to 1550 nm
  • HB800G Designed for Fiber Optic Gyroscopes (FOG)
Item #Design Wavelength(s)MFDaNACutoffAttenuation
HB800G 830 nm 4.2 µm 0.14 - 0.18 660 - 800 nm <5 dB/km
HB980T 980 nm 6.0 µm 0.13 - 0.15 870 - 970 nm <3 dB/km
HB1250Tb 1310 nm 9.0 µm 0.11 - 0.13 1100 - 1290 nm <2 dB/km
HB1500Tb 1550 nm 10.5 µm 0.11 - 0.13 1290 - 1540 nm <2 dB/km
  • Mode Field Diameter (MFD) is a nominal, calculated value, estimated at the operating wavelength(s) using a typical value of numerical aperture and cut-off wavelength.
  • The recommended strip tool for HB1250T and HB1500T is the T06S16
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
HB800G Support Documentation
HB800G Design Wavelength: 830 nm, FOG Optimized PM Fiber, 4.2 µm MFD
$18.80
Per Meter
Volume Pricing
Today
HB980T Support Documentation
HB980T Design Wavelength: 980 nm, Telecom Optimized PM Fiber, 6.0 µm MFD
$18.80
Per Meter
Volume Pricing
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HB1250T Support Documentation
HB1250T Design Wavelength: 1310 nm, Telecom Optimized PM Fiber, 9.0 µm MFD
$18.80
Per Meter
Volume Pricing
Today
HB1500T Support Documentation
HB1500T Design Wavelength: 1550 nm, Telecom Optimized PM Fiber, 10.5 µm MFD
$18.80
Per Meter
Volume Pricing
Today
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