Abstract

This paper proposes and demonstrates a widely tunable and precisely controllable optical transmitter that uses semiconductor optical amplifiers (SOAs) and an optical tunable filter (OTF) for metro/access dense-wavelength-division-multiplexing (DWDM) systems/networks. The transmitter consists of a fiber-ring-laser section based on SOA(s) and an OTF and a modulation section based on an SOA. First,the requirements imposed on the components intended for the fiber-ring laser are clarified through approximate analyses and basic experiments. To obtain low-noise characteristics, the lower limit of effective OTF bandwidth is investigated by considering the SOA carrier lifetime. For obtaining wavelength precision,the upper limit of the effective OTF bandwidth is derived by considering the SOA ripple effect. Next, the proposed transmitter is demonstrated, where all SOAs are integrated into one planar lightwave circuit (PLC) platform using spot-size converting technology. By designing the fiber-ring-laser section according to the clarified requirements, a wavelength control precision of ±1.75 GHz is achieved while realizing the required relative intensity noise (RIN) from 1540 to 1560 nm. Finally,it is demonstrated that the transmitter can handle signals at up to 1.25 Gb/s.

© 2005 IEEE

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  8. D. Zhou, P. R. Prucnal and I. Glesk, "A widely tunable narrow linewidth semiconductor fiber ring laser", IEEE Photon. Technol. Lett., vol. 10, no. 6, pp. 781-783, Jun. 1998.
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Other

K. Sato, S. Okamoto and H. Hadama, "Network performance and integrity enhancement with optical path layer technologies", IEEE J. Select. Areas Commun., vol. 12, no. 1, pp. 159-170, Jan. 1994.

J. Kani, M. Teshima, K. Akimoto, N. Takachio, H. Suzuki, K. Iwatsuki and M. Ishii, "A WDM-based optical access network for wide-area gigabit access services", IEEE Commun. Mag., vol. 41, no. 2, pp. S43-S48, Feb. 2003.

H. Ishii, H. Tanobe, F. Kano, Y. Tohmori, Y. Kondo and Y. Yoshikuni, "Quasicontinuous wavelength tuning in super-structure-grating (SSG) DBR lasers", IEEE J. Quantum Electron., vol. 32, no. 3, pp. 433-441, Mar. 1996.

J. D. Berger, Y. Zhang, J. D. Grade, H. Lee, S. Hrinya and H. Jerman, "Widely tunable external cavity diode laser based on a MEMS electrostatic rotary actuator", presented at Proc. Optical Fiber Communication Conf. Exhibit (OFC) 2001,. [CD-ROM].

G. S. Li, R. F. Nabiev, W. Yuen, M. Jansen, D. Davis and C. J. Chang-Hasnain, "Electrically-pumped directly-modulated tunable VCSEL for metro DWDM applications", in Proc. 27th Eur. Conf. Optical Communication (ECOC) 2001, vol. 2, 2001, pp. 220-221.

K. Iwatsuki, H. Okamura and M. Saruwatari, "Wavelength-tunable single-frequency and single-polarization Er-doped fiber ring laser with 1.4 kHz linewidth", IEE Electron. Lett., vol. 26, pp. 2033-2034, 1990.

M. J. Chawki, I. Valiente, R. Auffret and V. Tholey, "All fiber, 1.5 micron widely tunable single frequency and narrow linewidth semiconductor ring laser with Fabry-Pérot filter", IEE Electron. Lett., vol. 29, pp. 2034-2035, 1993.

D. Zhou, P. R. Prucnal and I. Glesk, "A widely tunable narrow linewidth semiconductor fiber ring laser", IEEE Photon. Technol. Lett., vol. 10, no. 6, pp. 781-783, Jun. 1998.

G. Hunziker, R. Paiella, K. J. Vahala and U. Koren, "Measurement of the stimulated carrier lifetime in semiconductor optical amplifiers by four-wave mixing of polarized ASE noise", IEEE Photon. Technol. Lett., vol. 9, no. 7, pp. 907 -909, Jul. 1997.

I. Ogawa, F. Ebisawa, F. Hanawa, T. Hashimoto, M. Yanagisawa, K. Shuto, T. Ohyama, Y. Yamada, Y. Akahori, A. Himeno, K. Kato, N. Yoshimoto and Y. Tohmori, "Hybrid integrated four-channel SS-SOA array module using planar lightwave circuit platform", Electron. Lett., vol. 34, pp. 361-362, 1998.

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