A compact 3R-receiver module for short-haul SDH STM-16 systems

This paper describes a complete 3R optical receiver module for synchronous digital hierarchy (SDH) STM-16 short-haul systems, housed in a 20-pin dual- in-line (DIL) ceramic package. The module includes an InGaAs p-i-n photodio de, a commercial GaAs transimpedance amplifier, and a custom-made silicon b ipolar frequency- and phase-locked loop (FPLL)-based clock and data recover y (CDR) circuit. The fiber pigtail is actively aligned to the photodiode by using a proprietary technology that uses a silicon-based optical submount assembly (OSA). The use of a clock recovery circuit based on an FPLL allows avoiding an external low-frequency reference clock and achieving a root-me an square (rms) jitter of 0.075 UI. The module requires two supply voltages of 5 V and -4.5 V, for a total power dissipation of 930 mW, and has a tota l volume below 0.75 cm(3) (24.7 x 9.9 x 3 mm(3)). Measurements have shown f ull compatibility with SDH standards.