• ZG Technology (Shenzhen) Limited

Polarisation Maintain Coupler

The filter type Polarisation Maintain Coupler either splits the light from the input PM fibre into two output PM fibres, or combines light signals from two PM fibres into a single PM fibre. The state of polarisation can be aligned either with the slow or fast axis of the PM fibres. The device can be used to split high power linearly polarised light into multiple paths without perturbing the linear state of polarisation (SOP). It can also be used as a power tap to monitor signal power in a PM fibre system without disturbing the linear SOP of light propagating in the PM fibre. Applications include PM fibre interferometers, power sharing in polarisation sensitive systems and signal monitoring in PM fibre systems. The rugged stainless steel package is designed for high optical performance and stability. This compact device offers low excess insertion loss, low back reflection and high extinction ratio. Split ratios from 1% to 50% are available.