<?xml version="1.0"?><ownershipDocument><schemaVersion>X0201</schemaVersion>    <documentType>4</documentType><periodOfReport>2003-12-24</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0001121648</issuerCik><issuerName>OPTICNET INC</issuerName>        <issuerTradingSymbol>opct</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001041866</rptOwnerCik><rptOwnerName>BEI TECHNOLOGIES INC</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>ONE POST STREET</rptOwnerStreet1><rptOwnerStreet2>SUITE 2500</rptOwnerStreet2><rptOwnerCity>SAN FRANCISCO</rptOwnerCity><rptOwnerState>CA</rptOwnerState><rptOwnerZipCode>94104</rptOwnerZipCode><rptOwnerStateDescription></rptOwnerStateDescription></reportingOwnerAddress><reportingOwnerRelationship><isDirector>0</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>1</isTenPercentOwner><isOther>0</isOther></reportingOwnerRelationship></reportingOwner><nonDerivativeTable><nonDerivativeTransaction><securityTitle><value>Common stock</value></securityTitle><transactionDate><value>2003-12-24</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>J</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>7404848.0000</value><footnoteId id="F1" /></transactionShares><transactionPricePerShare><value>0</value><footnoteId id="F2" /></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>0</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>See note</value><footnoteId id="F1" /></natureOfOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeTransaction><securityTitle><value>Common stock</value></securityTitle><transactionDate><value>2003-12-24</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>J</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>100.0000</value><footnoteId id="F3" /></transactionShares><transactionPricePerShare><value>0</value><footnoteId id="F2" /></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>100.0000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></nonDerivativeTransaction></nonDerivativeTable><footnotes><footnote id="F1">Cancellation of shares owned by Opto Acquisition Sub, Inc., a wholly owned subsidiary of BEI Technologies, Inc., pursuant to the effectiveness of the merger of Opto Acquisition Sub, Inc. with and into OpticNet, Inc.</footnote><footnote id="F2">Price not applicable</footnote><footnote id="F3">Automatic conversion of shares of common stock of Opto Acquisition Sub, Inc into shares of common stock of OpticNet, Inc. pursuant to the effectiveness of the merger of Opto Acquisition Sub, Inc. with and into OpticNet, Inc.</footnote></footnotes><remarks></remarks><ownerSignature><signatureName>Robert R. Corr</signatureName><signatureDate>2003-12-24</signatureDate></ownerSignature></ownershipDocument>

