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A 60-GHz 4-Gb/s Fully Integrated NRZ-to-QPSK Fiber-Wireless Modulator.
- Source :
-
IEEE Transactions on Circuits & Systems. Part I: Regular Papers . Mar2017, Vol. 64 Issue 3, p653-663. 11p. - Publication Year :
- 2017
-
Abstract
- A fully integrated optical-to-wireless modulator for low-cost fiber-optical backhaul links is presented in this paper. In the receiver, a CMOS photodetector with a bandwidth of 0.5 GHz is integrated to perform optical-to-electrical conversion. A gain-boosted inverter based transimpedance amplifier achieves a high gain-bandwidth product without using inductive peaking. The two-stage equalizer compensates the photodetector bandwidth and extends the operation data rate to 4 Gb/s. The wireless modulator directly up-converts and modulates the baseband I/Q NRZ data to a QPSK signal centered at 60 GHz. Realized in 65-nm CMOS, the optical front-end achieves -3-dBm optical input sensitivity at 4 Gb/s with 10^\mathrm -12 BER. The modulator produces -7.2-dBm output power with -12-dB EVM at a bit efficiency of 19.6 pJ/b. This design demonstrates that a small form factor and low cost optical-to-millimeter-wave modulator can be realized to support future fiber-wireless networks. [ABSTRACT FROM AUTHOR]
- Subjects :
- *BALUNS
*ELECTRONIC amplifiers
*COMPLEMENTARY metal oxide semiconductors
Subjects
Details
- Language :
- English
- ISSN :
- 15498328
- Volume :
- 64
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Circuits & Systems. Part I: Regular Papers
- Publication Type :
- Periodical
- Accession number :
- 121551379
- Full Text :
- https://doi.org/10.1109/TCSI.2016.2617463