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http://dx.doi.org/10.3807/KJOP.2002.13.4.295

Configuration of ETDM 20 Gb/s optical transmitter / receiver and their characteristics  

Lim, Sang-Kyu (Optical Communications Department, Electronics and Telecommunications Research Institute)
Cho, Hyun-Woo (Optical Communications Department, Electronics and Telecommunications Research Institute)
Lyu, Gap-Youl (Optical Communications Department, Electronics and Telecommunications Research Institute)
Lee, Jong-Hyun (Optical Communications Department, Electronics and Telecommunications Research Institute)
Publication Information
Korean Journal of Optics and Photonics / v.13, no.4, 2002 , pp. 295-300 More about this Journal
Abstract
We developed an optical transmitter and receiver for an electrical time division multiplexed (ETDM) 20 Gb/s optical transmission system, and experimentally investigated their characteristics. Especially, the clock extraction circuit, which is a key component in realizing broadband optical transmission receivers, was realized by using an NRZ-to-PRZ converter implemented with a half-period delay line and an EX-OR, a high-Q bandpass filter using a cylindrical dielectric resonator, and a microstrip coupled-line bandpass filter. Finally, the bit-error-rate of demultiplexed 10 Gb/s electrical signal after back to-back transmission was measured, and a high receiver sensitivity [-26.2 dBm for NRZ ($2^{7}-1$) pseudorandom binary sequence (PRBS)] was obtained
Keywords
optical transmitter/receiver; clock extraction circuit;
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