Adaptive High Linearity Intensity Modulator for Advanced Microwave Photonic Links

Dingel, Benjamin B.; Madamopoulos, Nicholas; Prescod, Andru

doi:10.5772/intechopen.69262

Cited by 3 publications

(1 citation statement)

References 109 publications

(134 reference statements)

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“…The system demonstrated in this work is an analog microwave optics link (the downstream QPSK signal is first generated by an AWG, and then converted to intermediate frequency analog waves to drive the Si modulator), the low linearity of the employed Si modulators will strongly affect the overall performance of the system [37]. The DD-RX and lite CO-RX components are both generated by the beating between different optical carriers and signal sidebands, with a worse modulator linearity, the SNR of the generated DD-RX and lite CO-RX components will be lower which will result in a degraded system performance [37]. To further characterize the nonlinearity compensation capability of the proposed MRC-RX, the EVM performance versus the nonlinearity of the modulator (IMD3) are simulated for DD-RX, lite CO-RX and MRC-RX, respectively [38].…”

Section: Discussionmentioning

confidence: 99%

Highly Reliable Transmission System for Next-Generation Optical Access Network Based on Silicon Modulator With Maximum-Ratio Combined Receiver

Qin

Tao

Shu

et al. 2021

IEEE J. Select. Topics Quantum Electron.

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A novel maximum-ratio combined receiver (MRC-RX) is proposed and demonstrated through a proof-of-concept experiment, conducted to mitigate the system performance degradation caused by the low linearity of the silicon modulator when deployed in passive optical network (PON)-based access. By employing the proposed MRC-RX, an optimized receiver sensitivity is achieved, which enables the mitigation of the performance degradation induced by the silicon modulator, and a more reliable transmission in both cases of low and high received power. In the proof-of-concept experiment, at a bit error rate of 1.0×10-4 , the receiver sensitivity of the MRC-RX was improved by 3.5 dB and 6.7 dB compared with the lite coherent receiver (lite CO-RX) and direct detection receiver (DD-RX), respectively. Compared with a system employing a commercial lithium niobate (LiNbO3) modulator, a maximum improvement of ~5.6 dB in the receiver sensitivity was obtained for the MRC-RX in the silicon modulator system. Thus, the system performance degradation caused by the low linearity of the silicon modulator can be effectively reduced by employing the MRC-RX. The proposed method makes sense to the building of next generation high reliable photonics integrated access by employing silicon modulators.

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Section: Discussionmentioning

confidence: 99%