High sensitivity precision relative intensity noise calibration standard using low noise reference laser source

M. C. Cox*, N. J. Copner, B. Williams

*Awdur cyfatebol y gwaith hwn

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

20 Dyfyniadau (Scopus)

Crynodeb

The intensity noise of laser diodes is an increasingly important parameter for broadband analogue and high data rate telecommunication systems. The authors describe a new primary calibration standard for measuring the relative intensity noise (RIN) as a function of frequency (up to 20 GHz) with high sensitivities (< -171dBm/Hz). In addition a new optical technique has been developed based on a low noise optical source which provides an adjustable shot noise level. By comparing this flat noise spectrum with the test spectrum the main traceable path is provided by the measured DC photocurrent. Errors due to responsivity, gain, mismatch etc., as a function of frequency are significantly reduced and precisions of < 0.4 dB have been achieved.

Iaith wreiddiolSaesneg
Tudalennau (o-i)163-165
Nifer y tudalennau3
CyfnodolynIEE Proceedings - Science, Measurement and Technology
Cyfrol145
Rhif cyhoeddi4
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - 1998
Cyhoeddwyd yn allanolIe

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