Analysis of the spectrum characteristics of a super linear optical modulator

Andru J. Prescod; Benjamin B. Dingel; Nicholas Madamopoulos

doi:10.1117/12.846424

22 January 2010 Analysis of the spectrum characteristics of a super linear optical modulator

Andru J. Prescod, Benjamin B. Dingel, Nicholas Madamopoulos

Author Affiliations +

Proceedings Volume 7620, Broadband Access Communication Technologies IV; 762008 (2010) https://doi.org/10.1117/12.846424
Event: SPIE OPTO, 2010, San Francisco, California, United States

Abstract

We demonstrate the superior RF spectrum characteristics of an ultra-linear modulator. This modulator exhibits excellent linearity (Spurious Free Dynamic Range, SFDR ~ 133 dB at 1Hz bandwidth), wider linearization bandwidth (an order of magnitude wider), and flatter RF modulation frequency dependence characteristics (linearized 3dB bandwidth ~ 20% of central RF frequency) when compared with Resonator- Assisted Mach Zehnder (RAMZ) modulators. The modulator is based on a traveling-wave electrode design, in which a phase modulator (PM) is on the upper arm of a Mach Zehnder (MZ) interferometer and a ring resonator (RR) is located on the lower arm. This modulator design is also shown to have flexible control of the power split ratio of an RF input to both the PM and the RR, in addition to the RF phase bias between the RR and PM - which enables better manufacturing tolerance.

Citation Download Citation

Andru J. Prescod, Benjamin B. Dingel, and Nicholas Madamopoulos "Analysis of the spectrum characteristics of a super linear optical modulator", Proc. SPIE 7620, Broadband Access Communication Technologies IV, 762008 (22 January 2010); https://doi.org/10.1117/12.846424

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