Stock Single Mode Patch Cables Selection Guide
FC/PC to FC/PC
FC/APC to FC/APC
Hybrid
AR Coated Patch Cables
Low-Insertion-Loss Cables

Features

SM Patch Cables for Signal Transmission from 305 nm to 2100 nm
FC/PC 2.0 mm Narrow Key Connectors on Both Ends
Low Back Reflections (High Return Loss): 50 dB (Typ.)
Each Cable is Individually Tested
Available from Stock
Two Dust Caps Included

Thorlabs offers single mode patch cables with FC/PC connectors on both ends. Each cable is manufactured in our facility on state-of-the-art equipment and individually tested to ensure low back reflection (return loss) at fiber-to-fiber junctions. Available from stock, these cables feature Ø3 mm PVC protective jackets with internal kevlar threads for durability in the lab.

Each patch cable includes two protective caps that shield the ferrule ends from dust and other contaminants. Additional CAPF Fiber Caps for FC/PC-terminated ends are also sold separately.

Mating sleeves are available to connect FC to FC and FC to SMA connectors. These mating sleeves minimize back reflections and ensure proper alignment of the cores of each connectorized fiber end. Thorlabs also offers AR-Coated Single Mode Patch Cables, which have an antireflective coating on one fiber end for higher performance in fiber-to-free space applications. If you cannot find the appropriate stock patch cable your application requires, Thorlabs offers custom patch cables, which typically ship the same day they are ordered (for orders placed weekdays before 2 PM EST). Please see the Custom Cables link to the right to order a custom fiber patch cable.

Item #	P1-305A-FC	P1-405B-FC	P1-460A-FC	P1-630A-FC	P1-780A-FC
Fiber	SM300	SM400	460HP	SM600	780HP
Operating Wavelength	305 - 450 nm	405 - 532 nm	450 - 600 nm	600 - 800 nm^a	780-970 nm
Cutoff Wavelength	<300 nm	<400 nm	430 ± 20 nm	550 ± 50 nm	730 ± 30 nm
Mode Field Diameter (MFD)^b	1.9 µm @ 305 nm 3.0 µm @ 450 nm	3.0 µm @ 480 nm	3.5 ± 0.5 µm @ 515 nm	4.3 µm @ 633 nm 4.6 µm @ 680 nm	5.0 ± 0.5 µm @ 850 nm
Cladding Diameter	125 ± 1 µm	125 ± 1 µm	125 ± 1.5 µm	125 ± 1 µm	125 ± 1.5 µm
Coating Diameter	245 µm ± 5%	245 µm ± 5%	245 ± 15 µm	245 µm ± 5%	245 ± 15 µm
Attenuation (Max)^c	≤70 dB/km @ 350 nm ≤100 dB/km @ 450 nm	<50 dB/km @ 430 nm <30 dB/km @ 532 nm	≤30 dB/km @ 515 nm	≤15 dB/km @ 633 nm	<3.5 dB/km @ 850 nm
NA	0.12 - 0.14	0.12 - 0.14	0.13	0.10 - 0.14	0.13
Insertion Loss (Typical)	3.0 dB Loss (Connector to Connector) @ 375 nm	2.5 dB Loss (Connector to Connector) @ 405 nm	2.5 dB Loss (Connector to Connector) @ 488 nm	2.0 dB Loss (Connector to Connector) @ 633 nm	1.5 dB Loss (Connector to Connector) @ 780 nm
Return Loss	50 dB Typical (40 dB Min)
Connectors	FC/PC Narrow Key (2.0 mm) on Both Ends 30126C3
Length^d	1 m (for items ending in -1) 2 m (for items ending in -2) 5 m (for items ending in -5) 10 m (for items ending in -10)
Protective Jacketing	Ø3 mm, Yellow FT030-Y

Wavelength range is illustrative and not guaranteed
MFD is nominal, calculated value, estimated at the operating wavelength(s).
Attenuation is specified for bare fiber.
Not all cable types are available in all lengths. For custom length cables see our Custom Cables page.

Item #	P1-830A-FC	P1-980A-FC	P1-SMF28E-FC	P1-1550A-FC	P1-2000-FC-2
Fiber	SM800-5.6-125	SM980-5.8-125	SMF-28e+	1550BHP	SM2000
Operating Wavelength	820 - 1100 nm	970 - 1650 nm^a	1260 - 1620 nm	1460 - 1620 nm	1700 - 2100 nm
Cutoff Wavelength	660 - 800 nm	870 - 970 nm	<1260 nm	1400 ± 50 nm	<1700 nm
Mode Field Diameter (MFD)^b	5.6 µm @ 830 nm	5.8 µm @ 980 nm 6.2 µm @ 1064 nm 10.4 µm @ 1550 nm	9.2 ± 0.4 µm @ 1310 nm 10.5 ± 0.5 µm @ 1550 nm	9.5 ± 0.5 µm @ 1550 nm	13 µm
Cladding Diameter	125 ± 1 µm	125 ± 1 µm	125 ± 1.0 µm	125 ± 1.0 µm	125 ± 1.0 µm
Coating Diameter	245 µm ± 5%	245 µm ± 5%	245 ± 5 µm	250 ± 15 µm	245 ± 10 µm
Attenuation (Max)^c	≤5 dB/km @ 830 nm	≤3 dB/km @ 980 nm	≤0.40 dB/km	≤0.5 dB/km @ 1550 nm	20 dB/km @ 1900 nm^d
NA	0.10 - 0.14	0.14	0.14	0.13	0.11
Insertion Loss (Typical)	1.5 dB Loss (Connector to Connector) @ 830 nm	1.0 dB Loss (Connector to Connector) @ 980 nm 0.7 dB Loss (Connector to Connector) @ 1064 nm	0.3 dB Loss (Connector to Connector) @ 1310 nm	0.3 dB Loss (Connector to Connector) @ 1550 nm	0.3 dB Loss (Connector to Connector) @ 2000 nm
Return Loss	50 dB Typical (40 dB Min)
Connectors	FC/PC Narrow Key (2.0 mm) on Both Ends 30126C3
Length^e	1 m (for items ending in -1) 2 m (for items ending in -2) 5 m (for items ending in -5) 10 m (for items ending in -10)
Protective Jacketing	Ø3 mm, Yellow FT030-Y

Wavelength range is illustrative and not guaranteed.
MFD is nominal, calculated value, estimated at the operating wavelength(s)
Attenuation of SM2000 fiber is highly dependent on wavelength.
Attenuation is specified for bare fiber.
Not all cable types are available in all lengths. For custom length cables see our Custom Cables page.

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Posted Comments:

Poster: lauri.hallman

Posted Date: 2013-05-17 10:50:48.59

Hi, This fiber is specced for 450-600nm: http://www.thorlabs.de/_QLPopup.cfm?PN=460HP What happens if it is operated at 640 nm for example? Do you know the material dispersion as a function of wavelength for this fiber?

Poster: jlow

Posted Date: 2012-10-25 15:53:23.823

Response from Jeremy at Thorlabs: The coupling efficiency is going to be dependent on how close the mode fields overlap between the fiber and your focused spot. Having good control of the position and tip/tilt stage helps as well. I will get in touch with you to discuss about your application and some parts for cleaning and polishing your fiber.

Poster: czl0579

Posted Date: 2012-10-25 13:52:30.937

Have you tested the coupling efficiency for P1-630A-FC-2? We used a 20X objective and found the coupling efficiency is only 10%. Can you suggest some optomechanics for us to enhance the efficiency? Also, we suspect the fiber may be burnt at the edge. Do you have some methods to polish the fiber?

Poster: tcohen

Posted Date: 2012-03-09 19:58:00.0

Response from Tim at Thorlabs: Thank you for your feedback. The dispersion will be characteristic of the fiber and wavelength used. I have contacted you directly for more information.

Poster: rosalest

Posted Date: 2012-03-09 18:29:50.0

Do you happen to know the GVD (dispersion) of the fiber (glass). I would like to calculate an expected dispersion from a 1 ps pulse after my patch cable.

Poster: bdada

Posted Date: 2011-11-17 14:40:00.0

Response from Buki at Thorlabs: Thank you for your feedback. We will contact you for more information and to examine and replace your fiber. Please note that 16mW focused onto a single mode fiber core could get up to a power density of 200KW/cm^2. A small shift in the focal spot would move the light into the cladding where the epoxy could burn. It is best to use lower power levels for initial coupling efforts and then increase the power when your light is focused on the core of the fiber, instead of the edge of the fiber.

Poster: c2hollow

Posted Date: 2011-11-15 12:20:05.0

How much power can this fiber tolerate when coupling? We burnt the edge of one of our fibers and we were using only 16 mW of light at output.

Poster: bdada

Posted Date: 2011-09-20 19:24:00.0

Response from Buki at Thorlabs: Thank you for your question about the performance of the P1-2000-FC-2 at 2.3um. This patch cable uses SM2000 fiber, which we expect to have about 300dB/km attenuation around 2.3um. This is a moderate amount of attenuation, but with just a 2 meter length fiber this is equivalent to about 13% attenuation. Please contact TechSupport@thorlabs.com if you have any further questions.

Poster: snyderja

Posted Date: 2011-09-19 12:49:24.0

Do you have any knowledge of the performance of the P1-2000-FC-2 at 2.3 micron? Any idea of the attenuation at this wavelength? Will it work or should I stick to the multi-mode fibers for this wavelength.

Poster: apalmentieri

Posted Date: 2010-03-03 16:18:54.0

A further response from Adam at Thorlabs to Mario: We are intrigued by the application and will be providing samples of what we believe may work. Also, once we have a design we will add it to our standard product line of optical cables.

Poster: apalmentieri

Posted Date: 2010-03-03 13:40:48.0

A response at Adam at Thorlabs to Mario: We have two options that I think may work well for your application. We can provide a black 3.0mm diameter jacket, FT030, for these fibers or we can provide a 5.1mm diameter stainless steel jacket, FT051SS. These can be ordered as custom patch cables. I will email you directly to see if you are interested in either of these options.

Poster: Mario.Stipcevic

Posted Date: 2010-03-03 13:14:42.0

Dear Sirs, In last years I have bought quite a few single- and multi-mode patch cables from Thorlabs, for example P1-830A-FC-2. My research techniques make use of single photons sent thrugh the fiber and the main problem with your patch cables are that ther are quite porous for ambiental light. The light easily enters the fibers and creates a huge background. Would it be possible to obtain/order so called "dark fibers". I believe that feeding fibers through black rather than yellow or orange coating would greatly improve this problem. True solution (perhaps too expensive) could be to wrap the cable with a spiral metal strip, similar to shower pipes. Best regards, Mario Stipcevic

Poster: Laurie

Posted Date: 2009-01-22 11:06:01.0

Response from Laurie at Thorlabs to samleeis: A member of our technical support staff will be contacting you directly to provide a quote, discuss the available shipping options, and suggest solutions for coupling the light from a monochromator into the fiber.

Poster: samleeis

Posted Date: 2009-01-15 11:14:31.0

I got a P1-405A-FC-5 last month. I would like a quote for a 100 m version of the 405 nm FC single mode patch cable. Is it available for next day shipping? I cannot find the diameter of the core in your website, but only the MFD of 3.2 um. I am interested in the wavelength range of 395 to 475 nm. Do you have any information about the reflection and attenuation there? I am going to couple the light from a monochromator into the P1-405A optical fiber. Do you have any suggestion on what optical parts (ie. lens(es), optical funnel) that I can buy to do this?

Poster: Tyler

Posted Date: 2008-06-05 11:18:28.0

A response from Tyler at Thorlabs to dmkg: Our application engineers will send you a quote for the patch cable you are interested in. We have dedicated manufacturing capability devoted to the production of small volume orders of custom fiber patch cables for individual customers, which allows us to offer same day or next day shipping on most orders while minimizing the cost of the patch cord.

Poster: dmkg

Posted Date: 2008-06-04 08:27:17.0

Is it possible to get a 10m version of the 405 nm FC single mode patch cable? And what would be the cost of such a cable?

Poster: rburruss

Posted Date: 2008-01-07 18:32:03.0

I would like to see the specs for P1-7324-FC-10, but I dont see them on your web page. We have several of your 7324 cables in operation, but have lost the spec sheets, and we would like to know what we have as well as review replacement needs. Thanks you

Poster: technicalmarketing

Posted Date: 2007-12-04 09:42:48.0

To: pasquale.bianco -- The single mode P1-830A-FC-2 is not a polarization-maintaining fiber. We do carry a line of polarization-maintaining single mode fibers. Please see the following link: http://www.thorlabs.com/NewGroupPage9.cfm?ObjectGroup_ID=1596&visNavID=681. If you would like some help with finding a fiber that meets your needs, please feel free to call our European offices at +49 (0) 8131-5956-0 and speak to one of our application engineers. Thank you for your interest in Thorlabs, and we hope that this information is helpful to you.

Poster: pasquale.bianco

Posted Date: 2007-12-04 02:50:11.0

Good morning, my name is Pasquale Bianco, University of Florence, I am interesting at your single mode model P1-830A-FC-2, but I would like know if this fiber can maintain the beam polarization? Best regards Pasquale Bianco

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Single Mode FC/PC Fiber Optic Patch Cables

Features