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High Performance, Low Cost PIN, APD Receivers in Fiber Optical ...

High Performance, Low Cost PIN, APD Receivers in Fiber Optical ...

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<strong>Performance</strong> of <strong>APD</strong> comes with price!<br />

• Trade-off 1: Bandwidth~ Responsivity<br />

• InGaAs Absorption Layer Thickness<br />

• Trade-off 2: RC Bandwidth ~ Transit Time Bandwidth<br />

• InGaAs, InP layer thickness<br />

• Device geometry<br />

• Trade-off 3: BW@ M~10 ~ BW@ M~3<br />

• Multiplication layer dop<strong>in</strong>g<br />

• Diffusion junction depth control (Ehet control)<br />

• Trade-off 4: Breakdown Voltage ~ Thickness, Dop<strong>in</strong>g<br />

• InGaAs, InP layer thickness<br />

• Multiplication layer dop<strong>in</strong>g<br />

WOCC-2005

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