Silicon-based electro-optic phase modulator with reduced...

Details Silicon-based electro-optic phase modulator with reduced... Silicon-based electro-optic phase modulator with reduced...

2007-01-23

2007-01-23

Ben, Loha (Department: 2873)

Optical: systems and elements

Optical modulator

Light wave temporal modulation

C359S238000, C359S276000, C359S279000, C385S001000, C385S002000, C385S003000

Reexamination Certificate

active

11342098

ABSTRACT:
An arrangement for removing unwanted amplitude modulation from the output of an electro-optic phase modulator (formed within a silicon-on-insulator (SOI) system) includes resonant filters that are biased on the positive and negative slopes of the response signal. Therefore, as the amplitude response of one filter decreases, the amplitude response of the other filter increases, resulting in balancing the output and essentially eliminating amplitude modulation from the phase-modulated output signal. In one embodiment, ring resonators (formed in the SOI layer) are used to provide the filtering, where as the number of resonators is increased, the performance of the filtering arrangement is improved accordingly.

REFERENCES:
patent: 6549321 (2003-04-01), Noda
patent: 6618179 (2003-09-01), Kalluri et al.
patent: 6845198 (2005-01-01), Montgomery et al.
patent: 2003/0058504 (2003-03-01), Cho et al.
patent: 2004/0218189 (2004-11-01), Izatt et al.

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