H. Yagi, T. Kikuchi, N. Inoue, R. Masuyama, T. Katsuyama, K. Uesaka, Y. Yoneda, H. Shoji
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引用次数: 1
Abstract
Highly reliable InP-based pin-photodiode arrays monolithically integrated with a 90° hybrid consisting of MMI using the butt-joint regrowth were demonstrated for 100 Gb/s coherent receivers. Responsivity imbalance of all channels was less than ±0.5 dB owing to the phase adjustment of waveguides between MMIs. The wide 3-dB bandwidth of 26 GHz was obtained at a low bias voltage of -1.6 V. The dark current (bias: -3.0 V) was as low as 0.2 nA by optimizing the thickness of InP passivation, and the stable dark current was achieved in the accelerated aging test (-5 V at 175 °C) over 2,000 h.
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