Thorlabs Inc.
Visit the In-Line Fiber Optic Polarizers page for pricing and availability information

In-Line Fiber Optic Polarizers

  • Passive, In-Line Fiber Polarizers
  • Six Center Wavelengths from 630 to 1550 nm
  • FC/PC or FC/APC Connectors

ILP780PM-FC

Small In-Line Package

FC/APC

FC/PC

Labeled
Output and
Input Ends

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OVERVIEW

Common Specificationsa
Maximum Power 300 mW
Return Lossb ≥45 dB
Package Ø5.5 mm x 35 mm
Jacket Type Ø900 μm Loose Furcation Tubing
Pigtail Length 0.8 m +0.075 / -0.0 m on Each Side
Connector Key Size 2.0 mm Narrow Key
Aligned to Slow Axis
Operating Temperature -5 to 70 °C
Storage Temperature -40 to 80 °C
  • All Specifications Include Connectors
  • The actual return loss will be higher for FC/APC-terminated models than FC/PC-terminated models because the angled ferrule minimizes back reflections.

Features

  • Small, Durable Package (Ø5.5 mm x 35 mm)
  • Available Wavelengths:
    • 630 ± 10 nm
    • 780 ± 10 nm
    • 850 ± 10 nm
    • 980 ± 10 nm
    • 1064 ± 30 nm
    • 1310 ± 50 nm
    • 1550 ± 50 nm
  • FC/PC or FC/APC Narrow Key (2.0 mm) Connectors
  • Two Fiber Types Available:
    • Polarization Maintaining (PM)
    • Single Mode (SM) Fiber Available for 1550 nm Polarizers

Thorlabs' in-line fiber polarizers are designed to pass linearly polarized light while blocking the orthogonal polarization from an unpolarized (or randomly polarized) light source. They can attenuate the orthogonally polarized light with a high extinction ratio of at least 23 dB, depending on the specifics of each polarizer (see the tables below). These polarizers can also be used to enhance the extinction ratio of polarized signals. For the PM versions of these devices, the output polarization and 2.0 mm narrow key of the connector are aligned to the slow axis of the fiber. For FC/APC-terminated versions, the return loss will be higher than for FC/PC-terminated versions because the angled ferrule minimizes back reflections.

In-line fiber polarizers are ideal for fiber optic networks and measurement applications, including polarization analysis, polarization monitoring and control, polarization mode dispersion (PMD) monitoring, and polarization extinction ratio (PER) improvement. They work well with polarization-maintaining fiber amplifiers, fiber lasers, and high-speed communication systems and instrumentation. We also offer PM Patch Cables, PM Pigtailed Laser Diodes, and PM Laser Sources, which are perfect for use with our fiber polarizers.

Reverse Operation
Each pigtailed end of these in-line fiber polarizers is marked as "Input" or "Output" to facilitate use. The polarizers may be used in reverse, but all specs, including insertion loss and extinction ratio, may vary from those given on this page.

Fiber Polarization Control Selection Guide
Polarization Controllers Linear Polarizers
Paddle Fiber Polarization Controllers In-Line Fiber Polarization Controller Free-Space Fiber Bench Polarizing Fiber In-Line Fiber Polarizers Polarizing Fiber
Manual Paddle Fiber Polarization Controllers In-Line Manual Fiber Polarization Controller Free-Space FiberBench Faraday Mirrors In-Line Fiber Polarizers Polarizing Fiber

Hide 630 nm In-Line Fiber Polarizers

630 nm In-Line Fiber Polarizers

Item #a Center Wavelength Bandwidth Insertion Lossb Extinction Ratiob Fiber Type Connectors
ILP630PM-FC 630 nm ±10 nm 1.6 dB (Typ.) / ≤1.8 dB (Max)  ≥22 dB (Min) / 24 dB (Typ.) PM630-HP FC/PC
ILP630PM-APC FC/APC
  • All specifications include connectors.
  • Specified at 23 °C and over the entire bandwidth.

Part Number
Description
Price
Availability
ILP630PM-FC
In-Line Fiber Polarizer, 630 ± 10 nm, PM/PM Pigtail, FC/PC
$508.73
Today
ILP630PM-APC
In-Line Fiber Polarizer, 630 ± 10 nm, PM/PM Pigtail, FC/APC
$530.15
Today

Hide 780 nm In-Line Fiber Polarizers

780 nm In-Line Fiber Polarizers

Item #a Center Wavelength Bandwidth Insertion Lossb Extinction Ratiob Fiber Type Connectors
ILP780PM-FC 780 nm ±10 nm 1.1 dB (Typ.) / ≤1.3 dB (Max) ≥23 dB (Min) / 26 dB (Typ.) PM780-HP FC/PC
ILP780PM-APC FC/APC
  • All specifications include connectors.
  • Specified at 23 °C and over the entire bandwidth.

Part Number
Description
Price
Availability
ILP780PM-FC
In-Line Fiber Polarizer, 780 ± 10 nm, PM/PM Pigtail, FC/PC
$448.75
Today
ILP780PM-APC
In-Line Fiber Polarizer, 780 ± 10 nm, PM/PM Pigtail, FC/APC
$473.38
Today

Hide 850 nm In-Line Fiber Polarizers

850 nm In-Line Fiber Polarizers

Item #a Center Wavelength Bandwidth Insertion Lossb Extinction Ratiob Fiber Type Connectors
ILP850PM-FC 850 nm ±10 nm 1.1 dB (Typ.) / ≤1.3 dB (Max) ≥23 dB (Min) / 26 dB (Typ.) PM780-HP FC/PC
ILP850PM-APC FC/APC
  • All specifications include connectors.
  • Specified at 23 °C and over the entire bandwidth.

Part Number
Description
Price
Availability
ILP850PM-FC
In-Line Fiber Polarizer, 850 ± 10 nm, PM/PM Pigtail, FC/PC
$417.69
Today
ILP850PM-APC
In-Line Fiber Polarizer, 850 ± 10 nm, PM/PM Pigtail, FC/APC
$441.25
Today

Hide 980 nm In-Line Fiber Polarizers

980 nm In-Line Fiber Polarizers

Item #a Center Wavelength Bandwidth Insertion Lossb Extinction Ratiob Fiber Type Connectors
ILP980PM-FC 980 nm ±10 nm 1.0 dB (Typ.) / ≤1.2 dB (Max) ≥23 dB (Min) / 26 dB (Typ.) Fujikura SM98-PS-U25D FC/PC
ILP980PM-APC FC/APC
  • All specifications include connectors.
  • Specified at 23 °C and over the entire bandwidth.

Part Number
Description
Price
Availability
ILP980PM-FC
In-Line Fiber Polarizer, 980 ± 10 nm, PM/PM Pigtail, FC/PC
$375.39
Today
ILP980PM-APC
In-Line Fiber Polarizer, 980 ± 10 nm, PM/PM Pigtail, FC/APC
$400.33
Today

Hide 1064 nm In-Line Fiber Polarizers

1064 nm In-Line Fiber Polarizers

Item #a Center Wavelength Bandwidth Insertion Lossb Extinction Ratiob Fiber Type Connectors
ILP1064PM-FC 1064 nm ±30 nm 0.70 dB (Typ.) / ≤0.90 dB (Max) ≥26 dB (Min) / 28 dB (Typ.) Fujikura SM98-PS-U25D FC/PC
ILP1064PM-APC FC/APC
  • All specifications include connectors.
  • Specified at 23 °C and over the entire bandwidth.

Part Number
Description
Price
Availability
ILP1064PM-FC
In-Line Fiber Polarizer, 1064 ± 30 nm, PM/PM Pigtail, FC/PC
$407.46
Today
ILP1064PM-APC
In-Line Fiber Polarizer, 1064 ± 30 nm, PM/PM Pigtail, FC/APC
$433.58
Today

Hide 1310 nm In-Line Fiber Polarizers

1310 nm In-Line Fiber Polarizers

Item #a Center Wavelength Bandwidth Insertion Lossb Extinction Ratiob Fiber Type Connectors
ILP1310PM-FC 1310 nm ±50 nm 0.60 dB (Typ.) / ≤0.80 dB (Max) ≥26 dB (Min) / 28 dB (Typ.) Fujikura SM13-PS-U25D FC/PC
ILP1310PM-APC FC/APC
  • All specifications include connectors.
  • Specified at 23 °C and over the entire bandwidth.

Part Number
Description
Price
Availability
ILP1310PM-FC
In-Line Fiber Polarizer, 1310 ± 50 nm, PM/PM Pigtail, FC/PC
$382.51
Today
ILP1310PM-APC
In-Line Fiber Polarizer, 1310 ± 50 nm, PM/PM Pigtail, FC/APC
$407.46
Today

Hide 1550 nm In-Line Fiber Polarizers

1550 nm In-Line Fiber Polarizers

Item #a Center
Wavelength		 Bandwidth Insertion Lossb Polarization-
Dependent Loss		 Extinction Ratiob Fiber Type Connectors
ILP1550PM-FC 1550 nm ±50 nm 0.60 dB (Typ.) / ≤0.80 dB (Max) N/A ≥26 dB (Min) / 28 dB (Typ.) Fujikura SM15-PS-U25D FC/PC
ILP1550PM-APC FC/APC
ILP1550SM-FC 1550 nm ±50 nm 0.60 dB (Typ.) / ≤0.80 dB (Max) ≤28 dB N/A SMF-28e+ FC/PC
ILP1550SM-APC FC/APC
  • All specifications include connectors.
  • Specified at 23 °C and over the entire bandwidth.

Part Number
Description
Price
Availability
ILP1550PM-FC
In-Line Fiber Polarizer, 1550 ± 50 nm, PM/PM Pigtail, FC/PC
$382.51
Today
ILP1550PM-APC
In-Line Fiber Polarizer, 1550 ± 50 nm, PM/PM Pigtail, FC/APC
$407.46
Today
ILP1550SM-FC
In-Line Fiber Polarizer, 1550 ± 50 nm, SM/SM Pigtail, FC/PC
$280.35
Today
ILP1550SM-APC
In-Line Fiber Polarizer, 1550 ± 50 nm, SM/SM Pigtail, FC/APC
$306.48
Today