论文信息 - InP-Based Monolithic Optical Frequency Discriminator Module for WDM Systems

InP-Based Monolithic Optical Frequency Discriminator Module for WDM Systems

We have developed an InP-based monolithic optical frequency discriminator consisting of a temperatureinsensitive optical filter and dual photodiodes. This integrated device detects the optical frequency deviation of the input light as differential photocurrent from the dual photodiodes, and the photocurrent is fedback to the light source for frequency stabilization through a differential amplifier. The FSR and extinction ratio of the filter are 50GHz and 20 dB. The total opto-electronic conversion efficiency is 40%. In a frequency stabilization experiment using the developed discriminator, the frequency fluctuation of a DFB laser was reduced to less than 10MHz. key words: temperature insensitive lter, Mach-Zehnder lter,

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