A passive fiber-optic depolarizer

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 f...

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Veröffentlicht in:	IEEE photonics technology letters 1993-04, Vol.5 (4), p.463-465
1. Verfasser:	Lutz, D.R.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Birefringence Chromium Circuit properties Electric, optical and optoelectronic circuits Electronics Exact sciences and technology Fiber lasers Integrated optics. Optical fibers and wave guides Optical and optoelectronic circuits Optical coupling Optical fiber couplers Optical fiber polarization Optical fiber sensors Optical fibers Optical propagation Optical sensors
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Zusammenfassung:	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.< >
ISSN:	1041-1135 1941-0174
DOI:	10.1109/68.212700