Wavelength Locking of a Si Ring Modulator Using an Integrated Drop-Port OMA Monitoring Circuit
| Autor: | Joris Van Campenhout, Saurabh Agarwal, Philippe Absil, Michiel Steyaert, Marianna Pantouvaki, Mark Ingels |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Physics
business.industry Transmitter Electrical engineering Physics::Optics 02 engineering and technology Optical modulation amplitude Laser law.invention Wavelength 020210 optoelectronics & photonics Ring modulation CMOS law 0202 electrical engineering electronic engineering information engineering Optoelectronics Laser power scaling Electrical and Electronic Engineering Photonics business |
| Zdroj: | IEEE Journal of Solid-State Circuits. 51:2328-2344 |
| ISSN: | 1558-173X 0018-9200 |
| DOI: | 10.1109/jssc.2016.2592691 |
| Popis: | Silicon micro-ring modulators have the potential to enable energy efficient, high-bandwidth-density optical interconnects in CMOS compatible silicon technologies. However, their operation is highly susceptible to any thermal, laser wavelength or process variations and, as such, require a feedback control system for guaranteeing stable modulation. This paper demonstrates wavelength locking of a hybrid CMOS-silicon photonics ring-based transmitter using a 40 nm CMOS circuit to directly monitor the optical modulation amplitude (OMA) at the drop port of the ring modulator. OMA stabilization with an accuracy of $\sim {0.125}\,\,\,^{\circ }\text {C}$ or within $\sim $ 2% of the maximum OMA), a tracking speed of 5 nm/s ( $\sim {62.5}\,\,^{\circ }\text {C}$ /s), and a tuning range of 5 nm ( $\sim {62.5}\,\,^{\circ }\text {C}$ ) is demonstrated by subjecting the photonic transmitter both to thermal and laser wavelength variations under dynamic modulation at 2 Gbps. The demonstrated wavelength locking concept is also robust to the variations in the input laser power and can be implemented with low power. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|