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SM FC/APC Patch Cables

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Single Mode FC/APC Fiber Optic Patch Cables




  • SM Patch Cables for 305 to 2100 nm
  • FC/APC Connectors Reduce Back Reflections
  • Low Back-Reflections (High Return Loss):60 dB (Typ.)
  • Custom Cables Also Available

Features

  • FC/APC Narrow Key (2.0 mm) Connectors
  • High Return Loss (Low Back Reflection) of 60 dB (Typical)
  • 0.3 dB Connector to Connector Loss for Telecom Wavelengths
  • Each Cable is Individually Tested

These FC/APC fiber optic patch cables are ideal for systems that are sensitive to back reflections. The narrow key connector utilizes a ferrule that has an 8° angle polished tip, ensuring return losses in excess of 60 dB. Each cable is FC/APC connectorized on both ends, and most cables are available in 1, 2, and 5 m lengths.

Each patch cable includes two protective caps that shield the ferrule ends from dust and other hazards. Additional CAPF Plastic Fiber Caps and CAPFM Threaded Metal Caps for FC/APC-terminated ends are also sold separately. Mating sleeves are available to connect FC/APC to FC/APC connectors. These mating sleeves minimize back reflections and ensure proper alignment of the cores of each connectorized fiber end.

For shorter wavelengths, Thorlabs also offers Low-Insertion-Loss Patch Cables, which feature handpicked single mode fiber with tighter core concentricity specifications for lower insertion loss and higher transmission. We also offer 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 also offers custom patch cables with same-day shipping.

 

Item #P3-305A-FCP3-405B-FCP3-460B-FCP3-630A-FCP3-780A-FC
Fiber SM300 SM400 SM450 SM600 780HP
Operating Wavelength 320 - 430 nm 405 - 532 nm 450 - 600 nma 600 - 800 nmb 780-970 nm
Cutoff Wavelength 400 -0/+50 nma550 ± 50 nm730 ± 30 nm
Mode Field Diameter
(MFD)
c
1.8 - 2.6 µm @ 350 nm 3.0 µm @ 480 nm 3.3 µm @ 488 nm
3.4 µm @ 514 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 ± 1.0 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)d ≤15 dB/km @ 633 nm<3.5 dB/km @ 850 nm
NA 0.12 - 0.14 0.12 - 0.14 0.10 - 0.14 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 60 dB Typical
Connectors FC/APC 2.0 mm Narrow Key
30126A3
Lengthe 1 m (for items ending in -1)
2 m (for items ending in -2)
5 m (for items ending in -5)
Protective Jacketing Ø3 mm, Yellow
FT030-Y
  • Fiber is hand selected to ensure higher cutoff wavelength. For SM operation near the cutoff wavelength, launch conditions need to be taken into consideration.
  • 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 #P3-830A-FCP3-980A-FCP3-SMF28E-FCP3-1550A-FCP3-2000-FC-2
Fiber SM800-5.6-125 SM980-5.8-125 SMF-28e+ 1550BHP SM2000
Operating Wavelength 820 - 1100 nm 970 - 1650 nma 1260 - 1620 nm 1460 - 1620 nm 1700 - 2100 nm
Cutoff Wavelength 660 - 800 nm 870 - 970 nm 1400 ± 50 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 nmd
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 60 dB
Connectors FC/APC 2.0 mm Narrow Key
30126A3
Lengthe 1 m (for items ending in -1)
2 m (for items ending in -2)
5 m (for items ending in -5)
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.
  • Attenuation of SM2000 fiber is highly dependent on wavelength.
  • Not all cable types are available in all lengths.

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