The Near Infrared WDM enables the low loss combining or splitting of a pair of wavelengths within the 700nm to 1150nm region. G&H can rapidly produce such custom WDMs, with typical minimum wavelength separation of 50nm.

Designed for applications in fibre laser, sensing, biomedical, military and avionics the WDM utilises G&H’s low loss fused fibre technology. No light leaves the fibre and therefore no alignment is required. Furthermore the output fibre pigtails may be directly integrated into beam delivery systems.

Specific applications could include combining two sensor wavelengths onto one fibre, splitting laser harmonics, or combining wavelengths in fibre lasers.

For components which split optical signals of the same wavelength within the near infrared region please refer to the datasheet ‘Near Infrared Coupler’.

Key Features:

700 to 1150nm operation

Custom wavelength capability

50nm minimum wavelength spacing (<50nm channel spacing available on request)

Low loss

High power handling

Custom product

Applications:

Fibre lasers

Sensors

Biomedical equipment

Avionics

Military

Research

Optical Specifications

1. In 2x2 components insertion loss is not specified for launch through second input port P4 (coloured blue)

2. Maximum insertion loss at operating wavelength. Not including TDL, PDL or connector losses.

3. Improved specifications may be available- contact Sales Department.

1. For connectorised component, operating temperature range is –5 to +75oC.

Housing Option

Configuration

Ordering Code Information

FFW-780060130 (Fused Fibre WDM, 780/1060, 1x2, Regular Housing, 1m pigtails, No connectors)

1. 1m Pigtail length as standard. For custom pigtail length requirements please contact the sales office.

2. Connectors may be fitted to housing types 4 and 5. For connectorisation of housing type 3 please contact the sales office.

The G&H Fused PM WDM, combines multiple wavelengths of light in PM Fibre whilst maintaining polarisation. G&H proprietary PM manufacturing technology provides low loss, with high polarisation extinction ratio. The all fibre construction offers excellent reliability and high power handling characteristics.

These high performance parts are available in many wavelength configurations, housing, fibre and connector options and can therefore be readily specified in a wide variety of applications, enabling rapid design cycles and new project builds.

In common with all PM components, it is necessary to launch into either the slow or the fast axis to maintain polarisation. For the G&H PM WDM, specifications are based on slow axis launch, although fast axis versions are also available if requested

Key Features:

Low Loss

High PER

High power handling

PM PANDA Fibre on all ports

Slow Axis operation as standard

Fast Axis operation available on request

Applications:

Pump signal WDM for EDFA

Fibre lasers

Instrumentation

Optical Specifications

1. Insertion loss specified at centre wavelength and room temperature.

2. 900-1100nm wavelength range may be below the 2nd order mode cut-off for the fibre used to manufacture this product type. Performance specified for single-mode incident on this path.

3. Custom specifications available on request

4. For wavelength spacing <50nm, please contact the sales office.

1. Measured reference port P3 input for signal wavelength, P2 input for pump wavelength and P1 input for signal and pump wavelengths.

Housing Option

Configuration

Ordering Code Information

Sample: FPW-980060110 (Fused Fibre WDM, 980/1060, 1x2, 1m pigtails, No connectors)

1. Insertion loss in specification table does not include connector losses.

2. The G&H high power housing option is available on request for this product.

3.  PM Products are manufactured using 250μm PANDA PM fibre, 400μm PANDA PM fibre available at wavelengths higher than 1400nm.