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Designing a High Performance TEC Controller

In optical telecommunication systems, diode lasers are mostly used either as the signal source in the transmitters or as the energy source in the optical amplifiers, their operations affect the performance of the whole system directly. Only under constant temperatures, diode lasers can perform stably, otherwise, their output wavelengths and power efficiencies will change dramatically.

In particular, Dense Wavelength Division Multiplexing (DWDM) systems combine a large number of laser beams of different wavelengths and inject the combined laser beams into a single fiber. The wavelength of each laser needs to be evenly placed within the low attenuation wavelength window of the fiber, so that an optical de-multiplexer at the other end of the fiber can distinguish each laser beam from the other laser beams without cross talks. Since the wavelength of the laser beam changes with the laser temperature, maintaining an accurate and stable laser temperature is a critical task for these DWDM systems.

In Erbium Doped Fiber Amplifiers (EDFA), diode lasers are used as the energy source, so called pump lasers. The laser temperature needs to be kept at a constant value so that the laser power is stable and the noise is minimized.

In addition, numerous passive…

About TEC

TEC’s Offerings

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Whether you’re just starting to research enterprise software or already navigating a complex selection project, providing clients with unbiased help is our core business. But TEC offers more, including extensive research and evaluation tools and services, such as

TEC’s Mission

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Technology Evaluation Centers (TEC) is an impartial software analysis firm. We do not represent, resell, or implement specific software solutions. TEC’s mission is to help organizations of all sizes identify the particular business software solutions that are best aligned to their individual requirements. TEC’s professional expertise covers the entire spectrum of business software, including:

TEC’s patented online decision-support engine—TEC Advisor—lets users evaluate and compare leading software solutions side by side. It lets you access an industry-leading database of over 25,000 features and functions for more than 40 software categories. This powerful tool, along with our extensive team of professional analysts and software selection experts, plus our vast library of software selection data, benefits TEC’s clients in far less time than traditional consulting services.

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Our clientele consists of IT and other professionals, business executives, and CIOs from organizations of every type and size, around the globe, in industries including manufacturing of all types, professional services, retail…