Company Filing History:
Years Active: 2005
Title: Alen Chan: Innovator in Optical Communication Technology
Introduction
Alen Chan is a notable inventor based in Scarborough, Canada, recognized for his contributions to optical communication technology. He has developed innovative solutions that enhance the performance of dense wavelength division multiplexing (DWDM) transmitters.
Latest Patents
Alen Chan holds a patent titled "Use of amplified spontaneous emission from a semiconductor optical amplifier to minimize channel interference during initialization of an externally modulated DWDM transmitter." This invention involves placing a semiconductor optical amplifier (SOA) in the optical path between a tunable laser and an external modulator on a DWDM optical transmitter. The modulator transfer function is measured using low-level amplified spontaneous emission light output from the SOA to determine the modulator bias that corresponds to minimum transmission. By biasing the external modulator to this point, the transmitter output power is reduced during laser turn-on. Additionally, the SOA bias is turned off to provide further attenuation as the laser is activated. This method also helps avoid emitting off-wavelength light during wavelength changes, allowing the laser wavelength to stabilize without interfering with adjacent DWDM channels.
Career Highlights
Alen Chan is currently employed at Nortel Networks Corporation, where he continues to work on advancements in optical communication technologies. His expertise in semiconductor optical amplifiers and modulation techniques has significantly contributed to the field.
Collaborations
Alen collaborates with Douglas McGhan, a fellow innovator in the field, to further enhance the capabilities of optical communication systems.
Conclusion
Alen Chan's innovative work in optical communication technology, particularly his patented methods for minimizing channel interference, showcases his significant contributions to the industry. His ongoing efforts at Nortel Networks Corporation continue to push the boundaries of optical technology.