Title :
Linearization of quantum well electro-absorption modulator by quantum well intermixing technique for analog optical links
Author :
Won Jun Choi ; Il Ki Han ; Yong Ju Park ; Eun Kyu Kim ; Jung Il Lee ; Woon Sik Kim ; Jong Chang Wi
Author_Institution :
Photonics Res. Center, Korea Inst. of Sci. & Technol., Seoul, South Korea
Abstract :
A Quantum Well Intermixing (QWI) technique has been introduced to modify the transfer function of quantum well electroabsorption (EA) modulator for analog optical links. The linearization of transfer function of EA modulator has been achieved by introducing QW absorption regions differently intermixed each other along the waveguide. A 39.6 dB of IMD2 (2nd order intermodulation distortion) suppression and a 3.6 dB of SFDR (Spurious Free Dynamic Range) enhancement have been achieved.
Keywords :
chemical interdiffusion; electro-optical modulation; electroabsorption; intermodulation distortion; linearisation techniques; optical communication equipment; optical waveguides; quantum well devices; transfer functions; EA modulator linearization; MQW electro-absorption modulator; QW absorption regions; SFDR enhancement; analog optical links; intermixed MQW structure; intermodulation distortion suppression; quantum well intermixing technique; quantum well modulator; second-order IMD; spurious free dynamic range enhancement; transfer function linearization; waveguide; Absorption; Dynamic range; Electrooptic modulators; Optical arrays; Optical fiber communication; Optical modulation; Optical waveguides; Phased arrays; Quantum well devices; Transfer functions;
Conference_Titel :
Microwave Photonics, 2001. MWP '01. 2001 International Topical Meeting on
Conference_Location :
Long Beach, CA, USA
Print_ISBN :
0-7803-7003-1
DOI :
10.1109/MWP.2002.981784
