Linearization of intensity modulators using quadratic...

Details Linearization of intensity modulators using quadratic... Linearization of intensity modulators using quadratic...

2006-02-07

2006-02-07

Sedighian, M. R. (Department: 2633)

Optical communications

Transmitter

Having particular modulation

C398S186000

Reexamination Certificate

active

06996345

ABSTRACT:
Changing the phrases when mixing of optical modes gives rise to intensity effects. This occurs in multi-mode interferometer (MMI) or arrayed waveguide gratings (AWG). Here we use an electro-arefractive modulator, with a quadratic electro-optic effect that has an optical transfer function (Or power vs voltage (L-V) curve) given by is Pout=Pin(1+γ cos θ)/2 where asymmetry factor γ measures the extinction ratio and the phase difference θ between arms isπ⁢⁢V2Vπ2⁢π⁢V2Vπ2.In turn, the voltage V is expressed as a sum of the DC bias and RF drive V=VDC+VRF.

REFERENCES:
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patent: 5850305 (1998-12-01), Pidgeon
patent: 5963567 (1999-10-01), Veselka et al.
patent: 6341184 (2002-01-01), Ho et al.
patent: 6647158 (2003-11-01), Betts et al.

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