Press Release

SUNNYVALE, Calif., Jun 19, 2002 (BUSINESS WIRE) -- Harmonic Inc. (Nasdaq:HLIT) today announced that it will be presenting at the Thomas Weisel Partners Growth Forum 4.0 on June 20, 2002, at 9:00 A.M. (Pacific Time). The live audio webcast of Harmonic's presentation will be available from Harmonic's website, www.harmonicinc.com, under the Investor Relations Events section. The replay will be available 3 hours after the live presentation through close of business on June 27, 2002, at the same Web address.

    About Harmonic

Harmonic Inc. is a leading provider of digital video, broadband optical networking and IP delivery systems to cable, satellite, telecom and broadcast network operators. Harmonic's open standards-based solutions for the headend through the last mile enable customers to develop new revenue sources and a competitive advantage by offering powerful interactive video, voice and data services such as video-on-demand, high definition digital television, telephony and Internet access.

Harmonic (Nasdaq: HLIT) is headquartered in Sunnyvale, California with R&D, sales and system integration centers worldwide. The Company's customers, including many of world's largest communications providers, deliver services in virtually every country. Visit www.harmonicinc.com for more information.

CONTACT:          Harmonic Inc.      
                  Robin N. Dickson, 408/542-2500     
                  or
                  StreetConnect  
                  Michael Newman, 408/542-2760  

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