NeoPhotonics, which designs photonic integrated circuit based modules for high-speed communications networks, filed on Thursday with the SEC to raise up to $115 million in an initial public offering. The San Jose, CA-based company, which was founded in 1996 as NanoGram Corporation, booked $155 million in sales last year. The company plans to list on the NYSE under the symbol NPTN. J.P. Morgan and Deutsche Bank Securities are the lead underwriters on the deal, for which pricing terms and timing were not disclosed.