A passive fiber-optic depolarizer

Dale Lutz

IEEE Photonics Technology Letters · 1993 · 17 citations · 3 references

Concepts

Abstract

A passive fiber-optic depolarizer for avoiding noise due to input polarization fluctuations in polarization-sensitive optical sensors is described. It consists of a 2*2 polarization-maintaining coupler (with a coupling ratio of >2/3) having two fiber leads spliced together with their respective fast axes crossed, forming a recursive loop structure. Essentially complete depolarization was experimentally demonstrated. This approach requires no active elements and is applicable even to extremely narrow bandwidth laser sources.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

References

3