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Lifetime Estimation for Hermetically Packaged 10 Gb/sec LiNbO(3) Optical Modulators.

H Nagata, N Mitsugi, K Kiuchi

    Applied Optics
    |December 15, 2010
    PubMed
    Summary
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    Hermetically sealed lithium niobate (LiNbO3) optical modulators aged for 5000 hours showed no parameter degradation. These reliable modulators are projected to last over 20 years at 50°C.

    Area of Science:

    • Materials Science
    • Optical Engineering
    • Semiconductor Physics

    Background:

    • Lithium niobate (LiNbO3) optical modulators are critical components in high-speed communication systems.
    • Ensuring the long-term reliability and stability of these modulators is essential for telecommunications infrastructure.
    • Hermetic sealing is a key factor in protecting sensitive optical devices from environmental degradation.

    Purpose of the Study:

    • To determine the operational lifespan of hermetically sealed 10 Gb/sec LiNbO3 optical modulators.
    • To assess the impact of accelerated aging on device performance and stability.
    • To provide an estimated lifetime projection under typical operating conditions.

    Main Methods:

    • Accelerated aging test conducted on hermetically sealed LiNbO3 optical modulators at 85°C for 5000 hours.

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  • Monitoring of key device parameters, including dc drift behavior, throughout the aging process.
  • Extrapolation of aging data to predict long-term operational lifetime at a lower temperature (~50°C).

    • Main Results:

    • No device failures were observed after 5000 hours of accelerated aging at 85°C.
    • Critical device parameters and dc drift behavior remained stable throughout the testing period.
    • The hermetically sealed LiNbO3 optical modulators demonstrated exceptional stability and reliability.

    Conclusions:

    • Hermetically sealed 10 Gb/sec LiNbO3 optical modulators exhibit excellent long-term reliability.
    • The projected operational lifetime exceeds 20 years at approximately 50°C, indicating robust performance.
    • These findings support the use of such modulators in demanding, long-duration optical communication applications.