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Noise characteristics of high-frequency superposed laser diodes for optical disc systems

Noise characteristics of high-frequency superposed laser diodes for optical disc systems

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© The Institution of Electrical Engineers
Published

Excess noise peaks in an index-guided single-mode laser can be suppressed by superposing high-frequency current. By this method, index-guided lasers have stable noise characteristics and the noise level is about 7–12 dB lower than that in gain-guided multimode lasers at output power of about 3 to 5 mW.

Inspec keywords: semiconductor junction lasers; electron device noise

Other keywords: high-frequency superposed laser diodes; HF current superposition; noise characteristics; optical disc systems; noise level; semiconductor laser; index-guided single-mode laser

Subjects: Semiconductor lasers; Lasing action in semiconductors

References

    1. 1)
      • Chinone, N., Takahashi, T., Kajimura, T., Ojima, M.: `Low-frequency mode-hopping noise of index-guided semiconductor lasers', 25, Proc. IEEE 8th semicond. laser conf., 1982.
    2. 2)
      • Ohishi, A., Chinone, N., Nakamura, M.: `Low-frequency feedback noise of semiconductor lasers oscillating in a single longitudinal mode', Technical digest of optical fiber communication, 23rd–25th January 1984, p. 34.
    3. 3)
      • T. Kajimura , Y. Kashiwada , H. Ouchi , K. Aiki . Highly reliable GaAlAs visible-light-emitting MCSP lasers. Jpn. J. Appl. Phys.
    4. 4)
      • G. Arnold , K. Petermann . Intrinsic noise of semiconductor lasers in optical communication systems. Opt. & Quantum Electron. , 207 - 219
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