Multiple-stage optical isolator

Details Multiple-stage optical isolator Multiple-stage optical isolator

1997-06-27

2000-04-11

Spyrou, Cassandra

Optical: systems and elements

Polarization without modulation

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

359495, 359497, 372703, G02B 530

Patent

active

060494255

ABSTRACT:
The present multiple-stage optical isolator has low polarization-dependency and low polarization-mode dispersion but does not require a long time for the assembly. It is constructed of a first unit having a first Faraday rotator placed within a magnetic field and at least one birefringent crystal sandwiching the Faraday rotator, these components being arranged in order from the light incident side; and a second unit having a second Faraday rotator placed within a magnetic field and at least one birefringent crystal sandwiching the Faraday rotator, these components being arranged in order from the light incident side, wherein the first and second units are arranged in order along the direction of the light transmission.

REFERENCES:
patent: 4974944 (1990-12-01), Chang
patent: 5208876 (1993-05-01), Pan
patent: 5381261 (1995-01-01), Hirai et al.
patent: 5428477 (1995-06-01), Siroki
patent: 5446578 (1995-08-01), Chang et al.
patent: 5566259 (1996-10-01), Pan et al.
patent: 5768015 (1998-06-01), Pattie
patent: 5774264 (1998-06-01), Konno et al.
patent: 5835270 (1998-11-01), Urino et al.

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