Complex frequency response filter and method for...

Details Complex frequency response filter and method for... Complex frequency response filter and method for...

2005-03-08

2005-03-08

Thompson, Tim (Department: 2873)

Optical: systems and elements

Optical modulator

Light wave temporal modulation

C359S263000, C359S264000

Reexamination Certificate

active

06865007

ABSTRACT:
There is provided a complex frequency response filter providing a frequency response having a desired shape. A first complex frequency response filter includes a first and a second reflecting surfaces defining a resonant cavity therebetween. Each of the reflecting surfaces respectively has a predetermined surface finish providing a given reflectivity, therefore providing resonances with a predetermined shaped frequency response of a predetermined amplitude and of a predetermined periodicity. Those frequency responses can then be summed to generate an arbitrarily complex spectral response. In another embodiment, the complex frequency response filter includes a transmission medium and a first and a second reflecting surfaces defining a resonant cavity therebetween. The transmission medium has a predetermined transmission pattern distributed therein therefore providing resonances having a predetermined shaped frequency response of a predetermined amplitude and of a predetermined periodicity, which can be combined to generate arbitrary frequency responses. A method for manufacturing such devices is also disclosed.

REFERENCES:
patent: 5499256 (1996-03-01), Bischel et al.
patent: 6600588 (2003-07-01), Kawanishi
patent: 20020181106 (2002-12-01), Xia et al.
patent: 20020181107 (2002-12-01), Cook
patent: 0991152 (2001-10-01), None
patent: 1052745 (2001-10-01), None

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