Optical isolator operating independent of polarization of an inc

Details Optical isolator operating independent of polarization of an inc Optical isolator operating independent of polarization of an inc

1993-11-19

1995-06-27

Lerner, Martin

Optical: systems and elements

Polarization without modulation

Polarization using a time invariant electric, magnetic, or...

359487, 372703, G02B 530, G02B 2728

Patent

active

054284775

ABSTRACT:
A polarization-independent optical isolator comprises three Faraday rotators and four birefringent elements. An optical arrangement of these elements is determined on the basis of the appropriate values derived from the analysis for polarization-independency. A transmission loss characteristic, which is most important in practical use of the optical isolator, is maintained at an excellent level even in presence of variation in temperature and wavelength and in presence of fluctuation in working precision. Deterioration of various isolator properties can be avoided.

REFERENCES:
patent: 4178073 (1979-12-01), Uchida et al.
patent: 4974944 (1990-12-01), Chane
patent: 5227623 (1993-07-01), Heffner
Journal of Optical Communications 12 (1991) 1, Y. Namihira, pp. 2-9; "Fiber Length Dependence of Polarization Mode Dispersion Measurements in Long-Length Optical Fibers and . . . ".

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