Stable Wavelength-Tuning Laser in Single-Frequency
by Optical-Injected FabryPerot Laser Diode and RSOA
for Long Fiber Distance Propagation¹

C. H. Yeh^a, *, C. W. Chow^b, Y. F. Wu^{a, b}, S. S. Lu^b, and Y. H. Lin^b

^a Information and Communications Research Laboratories, Industrial Technology Research Institute (ITRI),
Hsinchu 31040, Taiwan

^b Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University,
Hsinchu 30010, Taiwan

*e-mail: yeh1974@ gmail.com

Received August 2, 2011; in final form, August 3, 2011; published online November 28, 2011

Abstract—In this demonstration, we propose and experimentally investigate a stable wavelength-tuning laser
configuration by using self-seeded Fabry–Perot laser diode (FP-LD) and external-injected reflective semicon-
ductor optical amplifier (RSOA). Here, this proposed laser can be tuned in the wavelength range of 1534.05 to
1553.00 nm with a 1.1 nm tuning-step. And the output powers and side-mode suppression ratios (SMSRs) are
measured at –5.3 to 4.6 dBm and 31.2 to 50.1 dB/0.05 nm, respectively. And, the proposed laser also can be
directly modulated at 2.5 Gb/s on-off keying (OOK) modulation format and propagates 75 km single-mode
fiber (SMF) with no optical amplifier and dispersion compensation.

10.1134/S1054660X12010276

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