Directional coupler modulators designed for analog modulation of large signals at 810 nm

Conference · Wed Jan 01 04:00:00 EST 1986

OSTI ID:5029179

Roeske, F; Feit, M; Fleck, J; Jander, D; Kidd, B; Koo, J; Lowry, M; McWright, G; Tindall, W

Directional coupler modulators (DCMs) have gained interest as a method of obtaining high-speed analog modulation of large signals and have the potential to overcome difficulties encountered with schemes that modulate the light source directly. Recording precise, high-bandwidth analog information above approximately 3 to 4 GHz requires a streak camera. Photocathode sensitivities are extremely low at 1300 nm, where the bulk of the DCM work has been done to date. We are, therefore, developing a DCM to operate at 810 nm and to approach bandwidths of approximately 15 GHz. We present measurements of a systematic parameter study of the optical coupling properties, the electro-optical transfer function, and the single-shot, pulsed, electro-optical response of these devices. We discuss applications to some high-speed diagnostic systems.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5029179
• Report Number(s): UCRL-95315; CONF-8609127-7; ON: DE87000578
• Country of Publication: United States
• Language: English

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