| 摘要 |
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.
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