Miniature mass producible non-reciprocal devices

Details Miniature mass producible non-reciprocal devices Miniature mass producible non-reciprocal devices

1998-06-23

2000-05-16

Sugarman, Scott J.

Optical: systems and elements

Polarization without modulation

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

359280, G02B 530

Patent

active

060645229

ABSTRACT:
An n by m array of lenses layer where n is greater than 1 and m is greater than 1 is disposed on a combination of layers comprised of a first walk-off layer, a first non-reciprocal rotator layer, a first half-wave plate layer, a second half-wave plate layer, a second walk-off layer, a second non-reciprocal rotator layer, and a mirror layer. A method of forming optical p by q structures, where p is greater than 1 is provided. An n by m array of lenses layer where n is greater than 1 and m is greater than 1 is disposed on a combination of layers. The combination of layers is formed of the layers described above. An n by m structure comprising the array of lenses and the combination of layers is formed which is then divided into p by q structures having a p by q array of lenses layer, where p is greater than 1. Preferably p by 1 optical circulator strips are formed. Preferably all layers are formed by lithographic methods. The n by m array of lenses can be formed by reactive ion etching. The first and second half-wave plate layers can be formed by forming an initial first and second half-wave plate layer and modifying the initial first and second half-wave plate layers, such as by etching holes or perforating through the initial first and second half-wave plate layer.

REFERENCES:
patent: 5040863 (1991-08-01), Kawakami et al.
patent: 5204771 (1993-04-01), Koga
patent: 5471340 (1995-11-01), Cheng et al.
patent: 5808793 (1998-09-01), Chang et al.
patent: 5930418 (1999-07-01), Chang

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