PM Fiber Couplers / Combiners

Product number: SW11358

Manufacturer: Gooch & Housego

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Product information "PM Fiber Couplers / Combiners"

Fused, Visible Wavelength RGB, Broadband, Axis-matched, Low Ratio Tap; Fiber Type PM, Panda, Bow-tie, SM; 400-2199 nm; Number of Legs 1x2, 2x2; Splitting Ratio 50/50-1/99, 0.01-10%, Other; Fiber Length 0.5, 1 m; IL 0.3-25 dB; RL >50, >55 dB; Excess Loss 0.3-0.7 dB; PER ≥18, ≥20 dB; Dimensions Ø2.9x40-Ø5.5x34 mm, 75.5-85x5x85 mm

Gooch & Housego’s 52-X67 fused pure silica, 52-X65 visible wavelength RGB and 53-X89 series of broadband, fiber-based, polarization maintaining (PM), 1x2 and 2x2 fiber optic couplers, taps and optical signal splitters offer high extinction ratio (ER) with minimum optical loss and polarization launch into a single or dual axis (slow axis and fast axis).

Gooch & Housego (G&H) utilizes a proprietary, proven fused biconical taper (FBT) process to manufacture high grade PM couplers including single wavelength and wavelength flattened (broadband/wideband). G&H selects PM fibers such as Panda and bow-tie from different suppliers to accommodate your application-specific operating wavelengths.

Fused PM couplers usually operate over a certain wavelength band of ±20 nm. G&H’s latest innovative FBT wavelength flattening technology has expanded the operating wavelength band up to 50 nm, with performance comparable to G&H’s single mode (SM) WFCs (wavelength flattened couplers).

Available in several mechanical package options with multiple connector options like FC/PC, FC/APC etc., 52-X6X PM fiber couplers provide operating wavelengths from 400 nm to 680 nm, and coupling ratio offerings range from 50/50, 20/80, 10/90, 5/95 and 1/99 etc. Other coupling ratio options are available upon request.

G&H’s 53-X89 fused broadband PM couplers are small in size and exhibit a flat coupling ratio response over a broadband of wavelength ranges. Splitters are available in a variety of coupling/splitting ratios.

G&H’s FPM-X series of fused PM axis-matched low ratio tap fiber couplers enable low-power monitoring of a PM signal path, and the FPU-X series of fused PM low ratio tap couplers tap off low power from a signal path whilst maintaining polarization through the component. Proprietary PM manufacturing technology provides tap ratios as low as 0.01% with low loss and high signal path polarization extinction ratio. FPU-X PM low ratio tap couplers also exhibit improved tap ratio stability when input polarization extinction ratio levels are low or fluctuating.

Fused PM axis-matched low ratio tap fiber couplers exhibit outstanding tap ratio stability even when system polarization extinction ratio levels are low or fluctuating. The all-fiber construction and excellent loss characteristics provide exceptional reliability at high power as well as wide temperature range operation with temperature dependent loss (TDL) typically <0.002 dB/°C for the tap path.

FPM-X and FPU-X series high-performance parts are available at a range of wavelengths with different fiber options and can therefore be readily specified in a wide variety of applications, enabling rapid design cycles and new project builds. Standard parts are available at wavelengths from 900 to 1600 nm. For other wavelengths or coupling ratios please contact AMS Technologies.

Gooch & Housego’s FFP-X series of polarization maintaining (PM) couplers and combiners enable either the accurate monitoring and splitting of optical signals in polarization maintaining fiber or the efficient combination of two orthogonally polarized sources of light such that they are output through the same, single fiber output.

FFP-X PM Fiber Couplers:
Manufactured using industry-standard PM fiber, FFP-X PM fiber couplers are available in any coupling ratio from 1% to 50% with a wide variety of connector options. Based on G&H’s fused fiber technology, the FFP-X PM fiber couplers demonstrate very low loss, high polarization extinction ratio, high power handling and there is no price penalty for adding a second input port.

The center operating wavelength may be chosen from within a wide variety of operating passbands, including 780, 820, 980, 1064, 1310, 14xx, 15xx and 16xx nm, but also the 2 µm range (1900 to 2199 nm). In common with all PM components, it is necessary to launch into either the slow or the fast axis to maintain polarization. For the Gooch & Housego (G&H) PM couplers, specifications are based on slow axis launch, although fast axis versions are also available if requested.

FFP-X PM Fiber Combiners:
The G&H FFP-X PM fiber combiners enable the efficient combination of two orthogonally polarized sources of light such that they are output through the same, single fiber output. In optical amplifiers this provides a doubling of pump power whilst ensuring pump redundancy should a pump failure occur. Applications include high power optical amplifiers and undersea systems. All ports consist of polarization maintaining fiber.

Gooch & Housego’s FPB-X series of fused PM bow tie couplers enable the accurate monitoring and splitting of optical signals in polarization maintaining (PM) fiber. Manufactured using PM bow tie fiber, the FPB-X PM couplers are available in any coupling ratio from 1 to 50%.

Based on Gooch &Housego’s (G&H) fused fiber technology, the FPB-X PM bow tie couplers demonstrate very low loss, high power handling and there is no price penalty for adding a second input port. The center operating wavelength may be chosen from within the 1 μm operating passband, other operating passbands are available dependent on fiber availability.

In common with all PM components, it is necessary to launch into either the slow or the fast axis to maintain polarization. For the G&H PM FPB-X series bow tie couplers, specifications are based on slow axis launch, although fast axis versions are also available if requested.

NOTE: Other component types including ultra-low ratio taps (ULRT) and wavelength division multiplexers (WDM) are available on request, please contact AMS Technologies with your specific requirements.

Key Features:

Operating Wavelength Range: 400 to 2199 nm
Ultra-broad Bandwidth (53-X89)
High Polarization Extinction Ratio (PER): 15 to ≥20 dB
Polarization Launch into a Single or Dual Axis (Slow and Fast)
Coupling Ratio: 50/50, 20/80, 10/90, 5/95, 1/99, 0.01% to 10%, Other Ratio Options on Request
Number of Legs: 1x2, 2x2
Pigtail Length: 0.5, 1 m
Excellent Uniformity
Low Excess Optical Loss: 0.3 to <1.2 dB
Insertion Loss (IL): 0.3 to 25 dB
Tap Insertion Loss: 8.86 to 44 dB (FPM-X, FPU-X)
Low Wavelength Dependent Loss
Very Low Polarization Dependent Loss (PDL)
Ultra-low Polarization Axis Dependent Loss (PADL): <0.10 dB (FPM-X)
Low Temperature Dependent Loss (TDL): <0.002 dB/°C Typical (FPM-X)
High Directivity, Low Back-reflection – Return Loss (RL): ≥30 dB to >55 dB
High Isolation
High Reliability
Optical Power Handling: ≤500 mW, 4 W
Fast/Slow Axis Operation
Signal Fiber Type: Polarization Maintaining (PM) and PLMA Panda, Fibercore Bow Tie HB1000C – 6 and 10 μm Core
Tap Fiber Type: Single Mode (SM) Fiber (FPM-X)
Connector Type: FC/PC-PM, FC/APC-PM, None
Custom Designs Available
Dimensions: Ø2.9 x 40 to Ø5.5 x 34 mm, Ø3.0 x 60/71/76/85, 5x5x85 mm
Made Using Gooch & Housego’s Proven High-reliability FBT Process

Applications: Instrumentation; OCT Systems; Gyroscopes; Test and Measurement; Sensors; Aerospace; Telecom; WDM Systems; Defense; Medical; High-power Fiber Lasers; Fiber Amplifiers; EDFAs; Raman Amplifiers; Coherent Communications; Power Monitoring of PM Sources; Undersea Systems; IR Imaging; Biomedical; Industrial; Defense; IR Counter Measures

Manufacturer "Gooch & Housego"

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