Ultra-wideband fused couplers

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Gooch & Housego (G&H), manufacturer of optical components and systems, has introduced ultra-wideband fused couplers for the optical coherence tomography (OCT) market as source bandwidths increase.

The fused fibre coupler has become the component of choice when designing compact interferometer modules for OCT applications. G&H has been developing fused fibre coupler technology since 1985 and established themselves in the long haul telecommunications market due to the superior low loss, wide bandwidth characteristics of their components.

Andrew Robertson, senior vice president, said: 'While the majority of OCT market demand can be covered with couplers having 30-40nm operating bandwidths in the 850nm region, we are beginning to see the emergence of systems designed with optical sources which may have 3 or 4 times this bandwidth. We recently shipped components operating over 260nm bandwidth centred at 1050nm.'