Self-Routing Wavelength Switch

Period of Performance: 09/19/1997 - 09/27/1999


Phase 2 SBIR

Recipient Firm

Chorum Technologies (old: Macro-vision )
5490 Conestoga Ct.
Boulder, CO 80301
Principal Investigator


In Phase I, we have successfully developed an innovative wavelength routing switch. Based on this design, a dual-channel optical self-routing wavelength-division-multiplexing (WDM) switching network is demonstrated. The wavelength switch constructed in Phase I has characteristics of low-loss, high-speed, low power-consumption, polarization independent, and low wavelength crosstalk. This compact device integrates both wavelength filtering and signal routing capabilities, which is beyond the existing technology. Several excellent WDM devices have also been developed in conjunction with the Phase I research effort. These WDM devices will be introduced to the fiberoptic industry along with the Phase I wavelength routing switch at OFC'97. In Phase II, we will continue to optimize the performance of the 2-channel WDM routing switch. 4-, 8-, and 16- channel WDM wavelength switches will also be developed to meet the challenge of the demanding Dense-WDM network. With the design of the 16 channel DWDM router, where the channel spacing is about 2 nm, temperature stability becomes very important. In Phase II we will develop an athermal DWDM router with thermal coefficient of