Low-voltage GaAs one-chip oscillator IC for laser-diode noise suppression

Tsuyoshi Tanaka*, Hideo Nagai, Daisuke Ueda

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


A GaAs differential oscillator IC with on-chip LC resonator has been developed for suppressing the relative intensity noise (RIN) of a laser diode. The relationship between the Q-factor and minimum supply voltage for oscillation is fully described. In view of reducing the present LC resonator, we made use of BST (Barium Strontium Titanate) capacitor to make the resonator without increasing the chip area. The oscillation frequency is stable since it's determined by the geometry of the resonator. The experimentally fabricated oscillator IC achieved the output power of 12 dBm at the frequency of 600 MHz with voltage/current conditions of 2 V/20 mA. The present IC keeps quite stable RIN value less than -138 dB/Hz under the light-feedback condition up to 10%.

Original languageEnglish
Pages (from-to)1246-1251
Number of pages6
JournalIEICE Transactions on Electronics
Issue number9
StatePublished - 1 Sep 1995

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