Delay Line Interferometer Sort by: SKU Product Price Default Product Part No. Vendor Availability Price Optical DPSK Demodulator DL1000(WDMQuest) 5-6 Weeks $99,999.00 Fixed 50 Ghz DPSK Demodulator DL2000(WDMQuest) In Stock $99,999.00 DPSK C-band Dual Demodulator 50/66 67 Ghz C-band Dual-Rated Tunable DL3000(WDMQuest) In Stock $99,999.00