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Highly linear InP phase modulator for high dynamic range RF/photonic links
Conference proceeding

Highly linear InP phase modulator for high dynamic range RF/photonic links

R Wang, A Bhardwaj, S Ristic, L Coldren, J Bowers, P Herczfeld and Y Li
2010 IEEE MTT-S International Microwave Symposium, pp 1-1
May 2010

Abstract

Dynamic range Indium phosphide Integrated optics Linearity Optical losses Optical modulation Phase locked loops Phase modulation Photonic integrated circuits Radio frequency
The optical phase locked loop (OPLL) photonic integrated circuit (PIC) is a key element for the emerging linear coherent RF-photonic links. One of the main challenges for the OPLL-PIC is the nonlinearity of the Indium Phosphide (InP)-based phase modulator. In this paper, we report the experimental results from a multi-quantum well phase modulator fabricated on an InP substrate that is specially designed for the OPLL-PIC. The phase modulator shows low optical loss and good linearity performance. In particular, at a reverse bias voltage of 5.6 V, its phase IP3 and insertion loss per unit length are ∼2.8p/mm and 1.2 dB/mm, respectively.

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