Compact TO-CAN Header With Bandwidth Excess 40 GHz

Shih, Tien‐Tsorng; Tseng, Pei-Hao; Lai, Yune-Yu; Cheng, Wood-Hi

doi:10.1109/jlt.2011.2160154

Cited by 7 publications

(1 citation statement)

References 26 publications

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“…However, most of the cost-effective FPLDs and WRC-FPLDs are packaged with TO-can module with a finite modulation bandwidth of less than 4-5 GHz [33], [34]. Unless the special designs on the package of the WRC-FPLD [35] can be performed to greatly improve the impedance mismatch and to release the effect from the parasitic circuitry [36], the modulation bandwidth cannot be easily enhanced to meet the demand of current M-QAM-N-OFDM with requested bandwidth of more than 4 GHz. The problem of finite modulation bandwidth for the TO-can packed FPLD has left as a bottleneck to be overcome at current stage.…”

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confidence: 99%

Using a L-Band Weak-Resonant-Cavity FPLD for Subcarrier Amplitude Pre-Leveled 16-QAM-OFDM Transmission at 20 Gbit/s

Lin

Chi

et al. 2013

J. Lightwave Technol.

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A directly modulated and coherently injection-locked WRC-FPLD transmitter is preliminarily employed to perform the 16-QAM-OFDM data transmission by using an OFDM subcarrier amplitude pre-leveling technique. The maximum transmission bit-rate of 20-Gbit/s is reported by fusing the OFDM subcarrier pre-leveling with the coherent injection-locking techniques in such a directly modulated WRC-FPLD. Without pre-leveling the OFDM subcarrier, the coherently injection-locked L-band WRC-FPLD suppresses its mode-partition noise to improve the EVM of the 16-QAM-OFDM data only from 13.52% to 10.2%. The OFDM subcarrier pre-leveling effectively compensate the finite bandwidth and unflattened modulating response of the injection-locked WRC-FPLD to improve the transmission EVM and SNR performances. The received constellation plot reveals that the EVM and SNR of the back-to-back transmitted 16-QAM-OFDM data are significantly improved to 5.58% and 17 dB, respectively. With the use of both injection-locking and pre-leveling techniques, the directly 16-QAM-OFDM modulated WRC-FPLD transmitter can reach the FEC limited BER of at a receiving power sensitivity of dBm. The OFDM subcarrier pre-leveling technique helps the WRC-FPLD to reduce the overall BER of 16-QAM-OFDM data by one order of magnitude, providing a minimum BER of at a receiving power of dBm.

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confidence: 99%