Fabrication of an electro-absorption transceiver with a monolithically integrated optical amplifier for fiber transmission of 40-60 GHz radio signals
2011 (English)In: Semiconductor Science and Technology, ISSN 0268-1242, E-ISSN 1361-6641, Vol. 26, no 1, 014042- p.Article in journal (Refereed) Published
We report on the fabrication of a monolithically integrated semiconductor optical amplifier (SOA) and a reflective electro-absorption transceiver (EAT) for 40-60 GHz radio-over-fiber applications. The EAT can either function as a transmitter (reflective modulator) or as a receiver (photodetector) depending on operation mode. The SOA and the EAT sections are based on different InGaAsP multiple quantum-well active layers connected by a butt joint. Benzocyclobutene is used to reduce the capacitance beside the ridge mesa. Devices are designed to have a peaked response at the operating frequency through the design of microwave waveguides on top of the devices. The packaged device exhibits at 0.1 mW optical input power an amplified DC responsivity of 18.5 mA mW(-1) and a modulation efficiency of 0.67 mW V-1. The estimated radio frequency loss at 40 GHz of an optical link consisting of two SOA-EAT devices was 23 dB using an unmodulated optical input carrier to the transmitter of 0.94 mW.
Place, publisher, year, edition, pages
2011. Vol. 26, no 1, 014042- p.
Other Electrical Engineering, Electronic Engineering, Information Engineering Materials Engineering Condensed Matter Physics
IdentifiersURN: urn:nbn:se:kth:diva-29355DOI: 10.1088/0268-1242/26/1/014042ISI: 000285382000044ScopusID: 2-s2.0-79851471496OAI: oai:DiVA.org:kth-29355DiVA: diva2:395431
FunderEU, European Research Council, IST-035317
QC 201102072011-02-072011-02-012014-12-08Bibliographically approved