4 Channel Double Fiber Passive CWDM 2-sided OADM Unit: DCAD-4

DCAD-4 is a 4-channel double-fiber passive CWDM add/drop unit (OADM). It adds and drops the same four channels on both the East and West line sides. The DCLT-4 line termination unit only terminates one line side; the DCMD-4 mux/demux unit only combines or splits channels, with no add or drop function.

Configure the housing, wavelength band, and 1310nm window for the deployment. Choose a mini-LGX or LGX housing, then select one of five CWDM band groups on the ITU-T G.694.2 20 nm grid: 1271 to 1331 nm, 1311 to 1371 nm, 1391 to 1451 nm, 1471 to 1531 nm, or 1551 to 1611 nm. The 1310nm window (the Window Port option) is available only on the LGX housing, and only on the three longest-wavelength bands (1391 to 1451 nm, 1471 to 1531 nm, 1551 to 1611 nm); the mini-LGX housing has no physical location for the window. The EXP expansion port is not offered on this SKU, so channel count is fixed at the time of order.

All configurations use LC/UPC connectors and a Thin Film Filter (TFF) optical core. Passband insertion loss is below 1.8 dB on non-window combos and below 2.1 dB on window combos; express channel insertion loss runs below 2.5 dB and below 3.0 dB respectively, and the window itself adds 1.0 dB. Adjacent-channel isolation is 30 dB, non-adjacent isolation is 40 dB, passband ripple is 0.3 dB, PDL is 0.2 dB, and PMD is 0.1 ps. Operating temperature spans -5 to 70 C, MTBF is rated at 1,000,000 hours, and the unit meets CE, ISO, RoHS, and ITU-T G.694.2 compliance.

DCAD-4 units are typically deployed at CWDM ring or point-to-point add/drop nodes, where East and West line-side channels need to be added and dropped locally without disturbing the express channels. For configuration guidance or volume orders, contact our sales team.