Guatemalan Transimpedance Amplifier NRZ
We present the design and implementation of a 90 -Gb/s non-return-to-zero (NRZ) direct detection optical receiver that consists of a low-noise transimpedance amplifier (TIA), fabricated in a 55-nm SiGe BiCMOS technology, and a Ge photodiode integrated into a Silicon Photonic. Non-zero amplifier time constant can actually increase TIA bandwidth!! must decrease quadratically! If we integrate the output noise, the upper bound isn't too critical. Our portfolio includes linear TIAs for coherent and PAM-4 receivers and limiting TIAs for NRZ based receivers. Error-free (BER < 10-12) 56Gb/s NRZ operation is demonstrated with a record OMA sensitivity of-10. With the increasing demand for high-speed data transmission in optical inter-connects, achieving an.
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