{"first_sentence": {"type": "/type/text", "value": "Wavelength Division multiplexing (WDM) increases fiber transmission capacity by sending data over multiple wavelength channels simultaneously in a single fiber."}, "physical_format": "Hardcover", "last_modified": {"type": "/type/datetime", "value": "2008-04-29 15:03:11.581851"}, "weight": "1.8 pounds", "languages": [{"key": "/l/eng"}], "publishers": ["Springer"], "number_of_pages": 344, "isbn_13": ["9780792357766"], "id": 10606282, "edition_name": "1 edition", "isbn_10": ["0792357760"], "publish_date": "September 30, 2000", "key": "/b/OL7808962M", "authors": [{"key": "/a/OL2784459A"}], "title": "Multichannel Optical Networks (Network Theory and Applications)", "type": {"key": "/type/edition"}, "subjects": ["Communications engineering / telecommunications", "Computer Communications & Networking", "System analysis", "Networking - General", "Multi-Tasking (Data Processing)", "Optical Communication Engineering", "Computers", "Technology & Industrial Arts", "Science/Mathematics", "Optics", "Computer Science", "Imaging Systems", "Computers / Networking / General", "Computers-Computer Science", "Computers-Networking - General", "Technology / Imaging Systems", "Combinatorics", "Multichannel communication", "Optical communications"], "physical_dimensions": "9.4 x 6.3 x 0.8 inches", "revision": 1}