PM Combiner

  • Update:Jun 13, 2017
  • View:

The PM Combiner enables the efficient combination of two orthogonally polarised sources of light such that they are output through the same single fibre output. In optical amplifiers this provides a doubling of pump power whilst ensuring pump redundan

Product Introduction

The PM Combiner enables the efficient combination of two orthogonally polarised sources of light such that they are output through the same, single fibre 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 polarisation maintaining fibre.

Key Features:

Applications:

Optical Specifications

Parameter   9xx 10xx 14xx 15xx 16xx
Range of available centre wavelengths1,2   915-999nm 1000-1099nm 1400-1499nm 1500-1599nm 1600-1650nm
Insertion Loss (fast axis)3
Grade M Max 0.40dB 0.40dB 0.40dB 0.50dB 0.50dB
Grade W Max 0.60dB 0.60dB 0.60dB 0.70dB 0.70dB
Housing Option   3 3 3 3 3
Dimensions(fxL) for 1x2 & 2x2   3x71mm
Insertion Loss (slow axis)3
Grade M Max 0.35dB
Grade W Max 0.40dB
Return Loss / Directivity Min 50dB
TDL Typ 0.15dB
Pigtail tensile load Max 5N
Optical power handling Max 4W
Fibre type   All ports PM fibre
Pigtail   Primary coated fibre
Operating temperature range   -5 to 75oC
Storage temperature range   -40 to 85oC
  1. The centre wavelength may be selected from within the operating wavelength ranges supplied.
  2. Other wavelengths are available. Please contact the sales office.
  3. Insertion loss at centre wavelength (not including TDL or connector losses).

Configuration

Ordering Code Information

Example: FFP-SM3245F10 (PM Combiner, Grade M, regular housing, 2x2, channel centre = 1445nm,

telecoms PM fibre 250μm buffer, 1m pigtail, no connector)

  1. Channel centre must be within the wavelength ranges shown in the Optical Specifications table.
  2. Minimum pigtail length. Other pigtail lengths are available on request.
  3. Insertion loss in specification table does not include connector loss. Other connectors available on request.

Multimode Power Combiner with PM Signal Feedthrough

Our TFB series Power Combiners provide a high efficiency means of combining light from several multimode sources into one fibre.

Our proprietary manufacturing techniques allow the precise fusion of input fibres around a central PM polarisation maintaining) signal feedthrough fibre and a PM dual clad output fibre providing high coupling efficiency over a wide pump wavelength range.

Available in standard 3x1 and 7x1configurations, our power combiners can be fabricated from a range of industry standard multimode fibres allowing ease of splicing to commercially available laser diodes.

Available in a standard (6+1)x1 configuration, the combiner can be fabricated from a range of industry standard fibres for ease of splicing to commercially available laser diodes and fibre applications.

Custom options cover large mode area (LMA) signal feedthrough fibres, dual clad output fibres and port count / configurations and are available on request.

Custom variants using non-standard fibres are available on request.

Key Features:

Applications:

Optical Specifications

Parameter Specification Specification Unit
Pump Input Fibre NA 0.15 0.22  
Pump Input Wavelength 900 to 1000 900 to 1000 nm
Signal Input Wavelength 1550 or 1064 1550 or 1064 nm
Pump (MM) Transmission Efficiency2 ≥ 90 (Typ > 95) ≥ 90 %
Signal Transmission Efficiency3 ≥ 80 (Typ > 85) ≥ 80 (Typ > 85) %
Signal PER (Polarisation Extinction Ratio) >20 >20 dB
Return Loss/Directivity >40 >40 dB
Operating Temperature 0 to +75 0 to +75 oC
Storage Temperature -40 to +85 -40 to +85
  1. All specifications are for operation at room temperature.
  2. MM Transmission efficiencies based on typical system mode fill conditions and 0.5m pigtails. Reported at 975nm as standard.
  3. Signal (feedthrough) transmission efficiency reported at centre wavelength; specification typical for centre wavelength ±15nm (minimum).

Ordering Code Information

Example: TFB-P50611B30 (6+1x1 Tapered Fibre Bundle with PM 1550nm Signal feedthrough, six 105/125um, 0.15NA pump inputs, 1550nm core DCF Output in regular housing with 0.5m pigtails).

  1. Signal wavelengths of 1064nm or 1550nm assume the use of Nufern PM-980-HP and PM-1550-HP (or equivalent) signal feedthrough fibres respectively.
  2. Typical mode field diameters are based on ~7.5um for 1064nm and ~10.5um for 1550nm. Fibres are passive.
  3. Maximum housing lengths shown. Adequate heat sinking is required for high power operation. For more information please contact the G&H sales team.
  4. Minimum pigtail lengths.

Visible Wavelength Combiner

Our Visible Wavelength Combiners are singlemode optical fibre components and modules. They enable any two or three primary colours in the visible wavelength region to be combined or separated.

Designed for applications in display systems, sensors and biomedical equipment, the combiners utilise our low loss fused fibre technology.

No light leaves the fibre and therefore no alignment is required; and there are no unwanted reflections. Furthermore the output fibre pigtails may be directly integrated into beam delivery systems.

Combiners are available for either 2 or 3 wavelengths: 2 wavelength combiners combine red/green, blue/green or red/blue. 3 wavelength combiners provide full RGB operation; enabling full colour displays.

All variants are available on a custom basis, so please contact us to discuss your specific requirements.

Key Features:

Applications:

Parameter Specification Unit
Operating wavelengths, Blue/green 457/532 nm
Operating wavelengths, Green/red 532/633 nm
Operating wavelengths, Blue/red 457/633 nm
Channel transmission (Minimum) 90 %
Channel transmission (Typical) 95 %
Fibre type Speciality singlemode fibre  
Housing Semi-ruggedised housing f5.0 x 85 mm
Operating / storage temperature range -5 to +75 / -40 to +85 oC

 

Share: