Delay Line Interferometer Sort by: SKU Product Price Default Product Part No. Vendor Availability Price DPSK C-band Dual Demodulator 50/66.67 Ghz C-band Dual-Rated Tunable DL3000(WDMQuest) In Stock $12,000.00 Fixed 50 Ghz DPSK Demodulator DL2000(WDMQuest) In Stock $12,000.00 Optical DPSK Demodulator DL1000(WDMQuest) 5-6 Weeks $14,650.00