Title :
Microwave-Photonic Links Based on Transistor-Lasers: Small-Signal Gain Analysis
Author :
Iezekiel, Stavros
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Cyprus, Nicosia, Cyprus
Abstract :
The link gain for a directly modulated microwave-photonic link based on a transistor-laser (TL) is derived by making use of signal flow graph techniques. In contrast to conventional laser diodes, the three-terminal TL introduces an extra microwave port for impedance tuning of link parameters. Gain contour simulations using a small-signal equivalent circuit model for the TL indicate the potential for increased link gain compared with links that are terminated in 50 Ω at all ports.
Keywords :
equivalent circuits; laser tuning; microwave links; microwave photonics; optical communication equipment; optical links; optical modulation; semiconductor lasers; transistors; conventional laser diodes; directly modulated microwave-photonic link; extra microwave port; gain contour simulations; impedance tuning; link gain; link parameters; signal flow graph techniques; small-signal equivalent circuit model; small-signal gain analysis; three-terminal TL; transistor-laser; Masers; Microwave circuits; Microwave photonics; Microwave transistors; Transistors; Vertical cavity surface emitting lasers; Transistor-laser; analog links; microwavephotonic link; radio-over-fiber;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2291411
