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| Near Infrared Coupler | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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The Near Infrared Coupler splits light at any selected wavelength from 700nm to 1150nm. Designed for applications in fibre laser, sensor and avionics applications, the coupler utilizes 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. For components and modules which combine different wavelengths within the near infrared
region
please refer to the datasheet ‘Near Infrared WDM’.
Key Features: 700 to 1150nm operation Any coupling ratio available All fibre – no alignment required No unwanted reflections Low light loss High power handling
Applications: Fibre lasers Sensors Avionics Biomedical equipment Research
Optical Specifications
1. In 2x2 couplers 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. Any coupling ratio available. Please contact us for specifications of coupling ratios not listed.
1. For connectorised component, operating temperature range is –5 to +75oC.
Housing Option
Configuration
Ordering Code Information 1. FFS-780K31A10 (Fused Fibre Speciality Coupler, 780nm, 50/50 coupling ratio, regular housing, 1x2, A grade, 1m pigtails, no connectors) 2. FFS-060K31A10 (Fused Fibre Speciality Coupler, 1060nm, 50/50 coupling ratio, regular housing, 1x2, A grade, 1m pigtails, no connectors)
1. Minimum pigtail length. Further pigtail lengths available on request. Where connectorised, pigtail length is to connector end face. 2. Insertion Loss in specification table does not include connector losses. 3. Any coupling ratio available. Please contact G&H for ordering codes of coupling ratios not listed. 4. LC connector not available for housing code 6, fully ruggedised housing. 5. Connectors may be fitted to housing types 4, 5 and 6. For connectorisation of housing type 3 please contact the sales office. |
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| PM Coupler | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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The G&H PM Coupler enables the accurate monitoring and splitting of optical signals in polarisation maintaining fibre. Manufactured using industry-standard PM fibre, the PM Coupler is available in any coupling ratio from 1% to 50%. Based on G&H’s fused fibre technology, the PM Coupler demonstrates very low loss, high power handling and there is no price penalty for adding a second input port. The centre operating wavelength may be chosen from within a wide variety of operating passbands, including 980, 1064, 1310, 14xx, 15xx and 16xx.
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 Coupler, specifications are based on slow axis launch, although fast axis versions are also available if requested.
Key Features: All PM fibre construction Low excess loss High power handling 980, 1064, C, L and S bands available Slow axis operation as standard Fast axis operation also available
Applications: Power monitoring of PM sources Coherent communications Fibre gyroscopes High power fibre lasers Fibre amplifiers
Optical Specifications1
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