## Abstract A gain‐clamped long‐wavelength‐band erbium‐doped fiber amplifier (L‐band EDFA) based on a ring‐laser cavity is demonstrated using two C/L‐band wavelength‐selective couplers. This new design provides improved gain characteristics and high tuneability. The gain is clamped at 11.5 dB with
Gain control in double-pass L-band EDFA using a ring resonator and two-stage configuration
✍ Scribed by S.W. Harun; N. Md Samsuri; P. Poopalan; H. Ahmad
- Book ID
- 111731342
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 118 KB
- Volume
- 115
- Category
- Article
- ISSN
- 0030-4026
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The partial double-pass L-band erbium-doped fiber amplifier with enhanced gain characteristic is demonstrated using a band pass filter (BPF). The BPF is incorporated in the double-pass route to suppress the amplified spontaneous emission from the single-pass output for gain enhancing. The gain of 51
## Abstract A gain clamping technique for the long‐wavelength‐band erbium‐doped fiber amplifier (L‐band EDFA) is presented. It uses two circulators and a fiber Bragg grating (FBG) to route a backward amplified spontaneous emission (ASE) from a second‐stage amplifier and launch it back into the firs
## Abstract A new gain improvement technique for L‐band EDFA is presented. It uses an unpumped EDF in a double‐pass configuration in order to effectively suppress and completely exploit the backward ASE. Compared to a conventional single‐pass amplifier, the gain coefficient can be improved from 1.5