Improved transmission performance resulting from the reduced chirp of a semiconductor laser coupled to an external high-Q resonator

Journal Article · Tue May 01 04:00:00 EDT 1990 · Journal of Lightwave Technology; (USA)

DOI:https://doi.org/10.1109/50.54479· OSTI ID:6590014

Cartledge, J C ^[1]

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1. Bellcore, Red Bank, NJ (US)

The coupling of a Fabry--Perot laser to an external high-{ital Q} resonator, whose resonance frequencies are not altered by changes in the carrier density, yields a dynamic single-longitudinal-mode laser with a significantly reduced transient frequency chirp. The improvement in the receiver sensitivity due to the reduced chirp is examined for NRZ and RZ intensity modulation, direct detection systems operating in the 1.55-{mu}m wavelength region with conventional single-mode optical fiber. The methodology involves a solving modified rate equations numerically for the optical power and phase of the external resonator laser in response to an injected current waveform, modeling the signal transmission properties of single-mode optical fibers by convolution and modulus squared operations, and using a truncated pulse train approximation to evaluate the probability of error in the presence of intersymbol interference, shot noise, APD multiplication noise, and preamplifier circuit noise.

• OSTI ID: 6590014
• Journal Information: Journal of Lightwave Technology; (USA), Journal Name: Journal of Lightwave Technology; (USA) Vol. 8:5; ISSN JLTED; ISSN 0733-8724
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
CAVITY RESONATORS
ELECTRONIC EQUIPMENT
EQUIPMENT
FABRY-PEROT INTERFEROMETER
INTERFEROMETERS
LASER CAVITIES
LASER POWER TRANSMISSION
LASERS
MEASURING INSTRUMENTS
MODE SELECTION
OPTIMIZATION
POWER TRANSMISSION
Q-SWITCHING
RESONATORS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
SOLID STATE LASERS