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Cisco ONS 15454 DWDM Engineering and Planning Guide, Release 7.x
July 2006
Chapter2 Cards Specifications
2.2.4 Optical Amplifiers
Figure 2-7 shows a graphical representation of standard extended gain range for the OPT-BST-E card.
Figure 2-7 OPT-BST-E Card Standard and Extended Gain Range
2.2.4.3 OPT-BST-L Card
The OPT-BST-Lcard is an L-band DWDM EDFA with OSC add/drop capability that can operate up to
64 optical transmission channels at 50-GHz channel spacing over the L band of the optical spectrum
(wavelengths from 1570 nm to 1605 nm). Tocontrol gain tilt, the card is equipped with a built-in VOA
managed by the card microprocessor. The OPT-BST-L provides the following features:
•True variable gain
•Fixed gain mode (with programmable tilt)
•Fast transient suppression
•Nondistorting low frequency transfer function
•Settable maximum output power
•Fixed output power mode (mode used during provisioning)
•Constant drive current mode (test mode)
•Amplified spontaneous emission (ASE) compensation in fixed gain mode
Maximum optical
amplifier signal gain With tilt controlled at 0
dB ——23dB
Gain range — 8 — 23 dB
Extended gain range Gain range with tilt
uncontrolled 23 — 26 dB
Gain tilt error at target
gain tilt = 0 dB — — — +/– 0.5 dB
Table2-24 OPT-BST-E Card Power and Gain Specifications (continued)
Parameter Comment Min Typical Max Unit