A simple integrated ratiometric wavelength monitor based on multimode interference structure

作者：Hatta Agus Muhamad^*; Farrell Gerald; Wang Qian

来源：Conference on Optical Design and Engineering III, 2008-09-02 to 2008-09-05.

DOI：10.1117/12.797670

• Integrated optics
• multimode interference
• wavelength monitor

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 oil 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.

• 出版日期2008