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Cisco ONS 15454 DWDM Engineering and Planning Guide, Release 7.x
July 2006
Chapter 2 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-L card 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). To control 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
Table 2-24 OPT-BST-E Card Power and Gain Specifications (continued)
Parameter Comment Min Typical Max Unit
