DWDM optical transport systems are an important link in communications networks. These systems are the backbone of telecommunications infrastructures and carry large volumes of telecom traffic. As a result, their reliability is critical. Thermal performance is key to meeting this reliability requirement and is therefore a major component of DWDM system development. The resulting thermal design process must balance opposing requirements such as high product density, thermal sensitivity of optical components, cooling fan noise limits, and high ambient temperature and altitude requirements. This paper describes both a thermal design approach for DWDM system development, and a thermal design solution that demonstrates high product density and field-proven reliability.

“ETSI EN 300 019–2–3 V2.2.2, Equipment Engineering (EE); Environmental Conditions and Environmental Tests for Telecommunications Equipment; Part 2–3: Specification of Environmental Tests; Stationary Use at Weatherprotected Locations, 2003, ETSI (European Telecommunications Standards Institute).
“GR-63–CORE, NEBS Requirements: Physical Protection,” Issue 2, April 2002, Telcordia Technologies.
Azar, Kaveh, “Electronics Cooling–Theory and Applications,” Short course, 1998.
Holman, J.P., Heat Transfer., 4th Edition, McGraw-Hill, 1976
Kays, W., and London, A.L., Compact Heat Exchangers., 2nd Edition, McGraw-Hill, 1984
Steinberg, Dave S., Cooling Techniques for Electronic Equipment., 2nd Edition, Wiley and Sons, 1991
This content is only available via PDF.
You do not currently have access to this content.