1.55 /spl mu/m p-i-n/HBT photoreceiver in a high-frequency optical phase-locked loop for stable dense wavelength division multiplexing channel offsets

摘要

In this work, an integrated p-i-n photoreceiver (PR) was employed in an optical phase-locked loop (OPLL) designed for producing stable channel offsets for extremely dense WDM systems. Wavelength separations from 3.00 to beyond 27.11 GHz were generated, representing the highest locking frequency reported for any heterodyne OPLL with semiconductor lasers. These offsets generated are well beyond the best values currently obtainable by passive filtering techniques.