The G&H 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:

Low insertion loss

High power handling

9xx, 10xx, 14xx and 15xx variants

Applications:

Erbium doped fibre amplifiers (EDFAs)

Raman amplifiers

Undersea systems

Coherent optical communications

Optical Specifications

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.

G&H�s TFB series Power Combiners provide a high efficiency means of combining light from several multimode sources into one fibre.

G&H 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, G&H power combiners can be fabricated from a range of industry standard multimode fibres allowing ease of splicing to commercially available laser diodes.

Custom fibre and port configurations are available on request.

Key Features:

All fibre construction

High power design

High Coupling Efficiency

Custom configurations available

Applications:

Cladding pumped fibre lasers

Medical

Industrial

Defence

Optical Specifications¹

1. All specifications are for operation at room temperature.

2. Transmission efficiency based 7x1 with 125μm / 0.45NA output fibre and 0.5m pigtails. Reported at 975nm as standard.

Ordering Code Information

Example: TFB-MMM711A70 (7x1 Tapered Fibre Bundle with seven 105/125μm 0.15NA pump inputs, one 125μm 0.45NA output in high power housing with 0.5m pigtails).

1. Maximum housing lengths. Adequate heat-sinking is required for high power operation.

2. Minimum pigtail lengths.

G&H�s TFB series Power Combiners provide a high efficiency means of combining light from several multimode sources into one fibre.

G&H 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 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 variants using non-standard fibres are available on request.

Key Features:

1.5μm & 1.0μm PM Signal fibres available

All fibre construction

High power design

High Coupling Efficiency

PM Axis maintained

Custom configurations available

Applications:

Cladding pumped fibre lasers

Cladding pumped fibre amplifiers

Telecoms

Medical

Industrial

Defence

Optical Specifications¹

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.

G&H�s TFB series Power Combiners provide a high efficiency means of combining light from several multimode sources into one fibre.

G&H 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 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.

Key Features:

1.5μm & 1.0μm Signal fibres available

All fibre construction

High power design

High Coupling Efficiency

PM Axis maintained

Custom configurations available

Applications:

Cladding pumped fibre lasers

Cladding pumped fibre amplifiers

Telecoms

Medical

Industrial

Defence

Optical Specifications¹

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-550611B30 (6+1x1 Tapered Fibre Bundle with 1550nm Signal input, six 105/125μm 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 Corning Hi1060 or SMF-28 (or equivalent) fibres respectively.

2. Typical core diameters are based on ~4μm for 1064nm and ~8μm 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.

G&H�s 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 G&H�s 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:

2 or 3 colour combining or separating

All fibre � no lens alignment

No unwanted reflections

Low light loss

High power handling

Custom Product

Applications:

Visible and display systems

Sensors

Biomedical equipment

Research

Two Wavelength Combiner

Three Wavelength Combiner