Wei Deng, Zhe Kang. An Improved Cascade All-Optical Quantizing Scheme Based on Intensity-Modulated Label Channel[J]. Chinese Journal of Lasers, 2019, 46(11): 1106003
- Chinese Journal of Lasers
- Vol. 46, Issue 11, 1106003 (2019)
Fig. 1. Schematic of the improved COQ-ADC
Fig. 2. Examples of the quantizing resolution enhancement for the improved COQ-ADC. (a) Transfer functions and codes of quantizer1 (N =4, M =2, and T =4) ; (b) transfer functions and codes of quantizer2 (M =2) ; (c) performance ofresolution enhancement
Fig. 3. Temporal profiles of the output optical pulse signals of the channels with the phase different of 3π/16, 9π/16, and 15π/16, respectively, that output from the PSOQ module
Fig. 4. Output temporal profiles and power quantization results for 1546 nm label channel. (a) Output temporal profiles after intensity modulation; (b) output temporal profiles and codes (right axis) of the three quantization ports of quantizer 2
Fig. 5. Digital results. (a) Digital values and sinusoidal fit values; (b) calculated FFT spectrum of the digital results
Fig. 6. Schematic of the phase and splitting noises induced quantization errors. (solid curve) transfer function of the loop without phase jitter, (dashed curve) transfer function of the loop with phase jitter, and (solid line) transfer function of the IM
Fig. 7. Variation of ENOB with the phase jitter and the splitting ratio error in cases of different number of channels. (a) Variation with the phase jitter; (b) variation with the splitting ratio error
|
Table 1. Additional phase difference and corresponding central wavelengths of the 16 quantization channels
Set citation alerts for the article
Please enter your email address
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20