High-Speed 1.56-μm Multiple Quantum Well Asymmetric Fabry-Perot Modulator/Detector (AFPMD) for Radio-Over-Fibre Applications

Abstract

We have designed and fabricated airbridged optical modulator/detectors with modulation bandwidth exceeding 15GHz, the highest yet reported for InGaAsP/InGaAsP MQW AFPMDs. Wavelength dependence of the modulated output power at microwave frequencies is reported for the first time and the wide optical bandwidths (> 17nm) so measured suggest that the AFPMD can be used with low-cost uncooled CWDM lasers in radio-over-fibre applications. Index Terms-Asymmetric Fabry-Perot Modulator/Detector (AFPMD), Electroabsorption Modulator (EAM), Multiple Quantum Well (MQW), Radio-over-Fibre.

Coverage Range and Cost Comparison of Remote Antenna Unit Designs for In-building Radio over Fiber Technology

“…Optical insertion loss was 5 dB at 0 V bias. The new AFPM, as depicted in Figure 6, had RF modulation bandwidth of more than 15 GHz, and optical bandwidth of more than 17 nm [7]. With RF input power of 2 dBm, optical incident power of 0 dBm, and using commercial photodiode with responsivity of 0.7 A/W, uplink loss was 58 dB.…”

“…Optoelectronics components are still expensive, high power consumption [4], and also limited in bandwidth. To solve the problems, some optoelectronic transceivers have been developed: electroabsorption transceiver (EAT) [4][5][6], and asymmetric Fabry-Perot Modulator (AFPM) [7]. This paper summarizes the characteristics of EAT & AFPM, and compares their coverage range and cost in providing WCDMA and WLAN services.…”