BASIS OF PREPARATION (Policies)	3 Months Ended
BASIS OF PREPARATION (Policies)	Sep. 27, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation Oclaro, Inc., a Delaware corporation, is sometimes referred to in this Quarterly Report on Form 10-Q as “Oclaro,” “we,” “us” or “our.” On August 5, 2014, we entered into a separation agreement to sell our industrial and consumer business of Oclaro Japan located at our Komoro, Japan facility to Ushio Opto Semiconductors, Inc. ("Ushio Opto"). On October 27, 2014, the sale was completed. The assets and liabilities to be transferred to Ushio Opto within the next 12 months are classified as assets held for sale and liabilities in connection with the sale within current assets and current liabilities, respectively, on the condensed consolidated balance sheet at September 27, 2014. The transaction is more fully discussed in Note 5, Business Combinations and Dispositions. On November 1, 2013, we sold our optical amplifier and micro-optics business (the “Amplifier Business”) to II-VI Incorporated (II-VI). The sale is more fully discussed in Note 5, Business Combinations and Dispositions. On September 12, 2013, we sold our Oclaro Switzerland GmbH subsidiary and associated laser diodes and pump business (the “Zurich Business”) to II-VI. The sale is more fully discussed in Note 5, Business Combinations and Dispositions. These sales are reported as discontinued operations, which require retrospective restatement of prior periods to classify the results of operations as discontinued operations. The notes to our condensed consolidated financial statements relate to our continuing operations only, unless otherwise indicated. The accompanying unaudited condensed consolidated financial statements of Oclaro as of September 27, 2014 and for the three months ended September 27, 2014 and September 28, 2013 have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP") for interim financial information and with the instructions to Article 10 of Securities and Exchange Commission ("SEC") Regulation S-X, and include the accounts of Oclaro and all of our subsidiaries. Accordingly, they do not include all of the information and footnotes required by such accounting principles for annual financial statements. In the opinion of management, all adjustments (consisting only of normal recurring adjustments) considered necessary for a fair presentation of our consolidated financial position and results of operations have been included. The condensed consolidated results of operations for the three months ended September 27, 2014 are not necessarily indicative of results that may be expected for any other interim period or for the full fiscal year ending June 27, 2015. The condensed consolidated balance sheet as of June 28, 2014 has been derived from our audited financial statements as of such date, but does not include all disclosures required by U.S. GAAP. These unaudited condensed consolidated financial statements should be read in conjunction with our audited financial statements included in our Annual Report on Form 10-K for the year ended June 28, 2014 ("2014 Form 10-K").
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the reported periods. Examples of significant estimates and assumptions made by management involve the fair value of other intangible assets and long-lived assets, valuation allowances for deferred tax assets, the fair value of stock-based compensation, estimates used to determine facility lease loss liabilities, estimates for allowances for doubtful accounts, and valuation of excess and obsolete inventories. These judgments can be subjective and complex and consequently actual results could differ materially from those estimates and assumptions. Descriptions of the key estimates and assumptions are included in our 2014 Form 10-K.
Fiscal Years	Fiscal Years We operate on a 52/53 week year ending on the Saturday closest to June 30. Our fiscal year ending June 27, 2015 will be a 52 week year, with the quarter ended September 27, 2014 being a 13 week quarterly period. Our fiscal year ended June 28, 2014 was a 52 week year, with the quarter ended September 28, 2013 being a 13 week quarterly period.
Reclassifications	Reclassifications For presentation purposes, we have reclassified certain prior period amounts to conform to the current period financial statement presentation. These reclassifications did not affect our consolidated revenues, net income (loss), cash flows, cash and cash equivalents or stockholders’ equity as previously reported.

Disclosure of accounting policy for determining an entity's fiscal year or other fiscal period. This disclosure may include identification of the fiscal period end-date, the length of the fiscal period, any reporting period lag between the entity and its subsidiaries, or equity investees. If a reporting lag exists, the closing date of the entity having a different period end is generally noted, along with an explanation of the necessity for using different closing dates. Any intervening events that materially affect the entity's financial position or results of operations are generally also disclosed.

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