Optical Products Division, Roanoke, Va., U.S.A., has been awarded the Franklin ... be 'A universal low-Q active filter building block suitable for hybrid-integrated.
BALLANTINE MEDAL FOR ITT SCIENTIST
Charles Kuen Kao, ITT pioneer in the field of fibre-optic communications and now a staff scientist with ITT ElectroOptical Products Division, Roanoke, Va., U.S.A., has been awarded the Franklin Institute's Stuart Ballantine Medal 'for his conceptual studies of lightguide communications'. In 1966, when Dr. Kao was with Standard Telecommunication Laboratories (STL), a British ITT subsidiary, he published the now classic paper. 'Dielectric-fibre surface waveguide for optical frequencies', which stated that laser-
generated light waves could be guided in a hair-thin glass fibre for transmitting information. This new medium allowed a greater number of messages to be transmitted than did conventional wires and cables. Indeed, an optical fibre can transmit the entire Bible in a tenth of a second, or can carry 20 colour TV channels or 10 000 simultaneous telephone conversations. Now being tested for telephone, data and video communications, its use will be extended to numerous other areas, including transportation, computers and medical technology. Born in Shanghai, China, Dr. Kao received both his B.Sc. and Ph.D. degrees in electrical engineering from the University of London. He remained with Standard Telecommunication Laboratories until 1970, when he took leave from STL to organise the Electronics Department of the then new University of Hong Kong. In 1974, he rejoined ITT. Dr. Kao has published numerous papers and holds 18 patents (seven pending). A fellow of the IEE and a senior member of the IEEE, he was awarded a prize from the IEE for his 1966 paper, and received the 1976 Morey Award for outstanding contributions to glass science and technology. The Franklin Institute is a non-profit-making organisation which has promoted science, technology and education since 1824. Its gold Ballantine Medal is awarded in recognition of outstanding achievement in fields of communications or reconnaissance which employ electromagnetic radiation. Previous recipients have included John Bardeen, one of the inventors of the transistor, and another ITT and STL man, Alec Reeves, who invented pulse-code modulation.
Errata BIEY, M., and PREMOLI, A.: 'Highly selective RC-active filters using mucroer polynomials', IEE. J. Electron. Grcuits & Syst., 1, (4), pp. 155-158 Several errors occured in the printed text. The most important are as follows: In the abstract, line 2, and in Section 1, paragraph 4, 'critical route' should be 'critical root'. In Section 1, paragraph 5, '120 Hz' should be '1200 Hz'.
CICHOCKI, A., FILIPOWICZ, S.F., and OSOWSKI, S.: 'Analogue simulation of the nonlinear transfer characteristics: a novel approach', IEE J. Electron. Grcuits & Syst., 2,(1), pp. 26-28 The following errors occurred in the printed text: The name of the first author should be Cichocki. In Fig. \b, 0! and j32 should be interchanged. In Reference 1, the author's name should be Chua.
In Section 2, paragraph 3, penultimate line, delete 'of. In Section 3, line 3, 'maximally flat' should be 'multiple feedback'. On p. 157, column one, last line (above Table 4),/ 0>fe and HOk should be/o fe and HOk, respectively. In Section 5, line 5, the end of the sentence should be 'one—o.a. 2nd-order sections'. In Reference 4, 'ladder' should be 'leader feedback'. In Reference 11, the title should be 'A universal low-Q active filter building block suitable for hybrid-integrated circuit implementation'.
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ELECTRONIC CIRCUITS AND SYSTEMS, MARCH 1978, Vol. 2, No. 2
