A simple integrated ratiometric wavelength monitor based on multimode interference structure

Agus Muhamad Hatta; Gerald Farrell; Qian Wang

doi:10.1117/12.797670

27 September 2008 A simple integrated ratiometric wavelength monitor based on multimode interference structure

Agus Muhamad Hatta, Gerald Farrell, Qian Wang

Proceedings Volume 7100, Optical Design and Engineering III; 710023 (2008) https://doi.org/10.1117/12.797670
Event: Optical Systems Design, 2008, Glasgow, Scotland, United Kingdom

Abstract

Wavelength measurement or monitoring can be implemented using a ratiometric power measurement technique. A ratiometric wavelength monitor normally consists of a Y-branch splitter with two arms: an edge filter arm with a well defined spectral response and a reference arm or alternatively, two edge filters arms with opposite slope spectral responses. In this paper, a simple configuration for an integrated ratiometric wavelength monitor based on a single multimode interference structure is proposed. By optimizing the length of the MMI and the two output port positions, opposite spectral responses for the two output ports can be achieved. The designed structure demonstrates a spectral response suitable for wavelength measurement with potentially a 10 pm resolution over a 100 nm wavelength range.

Citation Download Citation

Agus Muhamad Hatta, Gerald Farrell, and Qian Wang "A simple integrated ratiometric wavelength monitor based on multimode interference structure", Proc. SPIE 7100, Optical Design and Engineering III, 710023 (27 September 2008); https://doi.org/10.1117/12.797670

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