Electrooptical Modulation In Multiple-Quantum-Well Hetero-Nipi Wave-Guides

    Authors

    C. Thirstrup; P. N. Robson; P. L. K. Wa; M. A. Pate; C. C. Button;J. S. Roberts

    Comments

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    Abbreviated Journal Title

    J. Lightwave Technol.

    Keywords

    ABSORPTION; VOLTAGE; Engineering, Electrical & Electronic; Optics; Telecommunications

    Abstract

    An optical intensity modulator based on multiple quantum well hetero (MQW-H) nipi waveguides is reported. In the low optical power regime (approximately 10(-5)W), the modulator exhibits an extinction ratio in excess of 100:1 at low drive voltage (4 V) and 5-B attenuation. Modelling and experimental results of the time response of the waveguide modulator are presented, and it is shown that the response is limited by the RC time constant of the drive circuit and the photocurrent charging up a dielectric capacitance. The modelling shows that with a loss penalty of approximately 1.5 dB, the speed of the present waveguide modulator is limited solely by the RC time constant that would allow modulation speeds of approximately 100 ps.

    Journal Title

    Journal of Lightwave Technology

    Volume

    12

    Issue/Number

    3

    Publication Date

    1-1-1994

    Document Type

    Article

    Language

    English

    First Page

    425

    Last Page

    429

    WOS Identifier

    WOS:A1994NG22000007

    ISSN

    0733-8724

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