In this paper

a novel DC coupled feedforward type optical burst mode receiver is presented. The clock recovery circuit in the CDR circuit consists of current limited phase regulating oscillator with trigger input for handling the burst-mode signals

whose bit rate vary with each packet. The results of the simulation indicate that the receiver sensitivity is -21dBm （average power

10-9BER） at bit rates up to 1.25Gb/s and the maximum receivable optical average power is -1 dBm

so the dynamic range is 20 dB. The minimum packet spacing required to properly recover the first bit in the second packet is 20ns. The simulation result alose confirms that the high frequency 5.0Gb/s of the clock recovery and the high speed 5.0 Gb/s of the decision circuit.