User guide

Tunable Laser Source 67
A Technical Specifications
IMPORTANT
The following technical specifications can change without notice.
The information presented in this section is provided as a reference
only. To obtain this product’s most recent technical specifications,
visit the EXFO Web site at www.exfo.com.
WAVELENGTH
Range (nm) 1510 to 1612
Display resolution (pm) 1
Effective spectral linewidth FWHM
b
(GHz) 1.3 (typical)
Repeatability
c
(pm) 10 measurements ±2.5 (6 = 5)
Stability
c
(pm) 1 hour ±6 (6 = 12)
Uncertainty
d
(pm) ±15
Sweep rate
e
(nm/s) Maximum 50
Minimum 2
Tuning time
f
(ms) 75 (typical)
Notes
a. Specifications are valid at 23 °C ± 1 °C after one-hour warmup time.
b. FWHM: full width at half maximum. The specification is valid at 1580 nm, where
it corresponds to 12 pm.
Given in HR mode.
Typical 700 MHz at 1610 nm and 2 GHz at 1520 nm.
Linewidth is Gaussian-like and produces a coherence length of about 15 cm
when propagating into SMF-28 fiber type.
c. Expressed as ± half the difference between the maximum and
minimum values measured.
d. User calibration may be required.
e. Operating in continuous sweep.
f. 1 nm step, one complete step through GPIB in manual mode with FLS-2600B.
g. In normal mode. Operating in high-resolution mode (HR) typically reduces power level
at extreme wavelengths, therefore shortening the tuning range by a few nanometers.
h. At connector output of the source.
i. In the 1515 nm to 1610 nm range.
SSE: source spontaneous emission
RBW: spectral resolution bandwidth
j. ALC: Automatic level (or power) control.
k. For 1 dB step 10 % to 90 % response time.
POWER
Output power
g, h
(dBm) From 1515 nm to 1610 nm * 0
From 1510 nm to 1612 nm * —10
Stability
c
(dB) 15 minutes ±0.005 (6 = 0.01)
1 hour ±0.01 (6 = 0.02)
Repeatability for a wavelength change
c
(dB) 10 measurements ±0.015 (6 = 0.03)
Signal to SSE
g, i
(dB) From 1515 nm to 1610 nm * 75 (typical)
±1 nm from peak with RBW 0.1 nm From 1550 nm to 1610 nm * 80 (typical)
Signal to total SSE (dB) * 45
50 (typical)
INTERNAL VARIABLE ATTENUATOR
Attenuation range (dB) 10
Linearity with attenuation (dB) ±0.3 (typical)
Repeatability for specific wavelength
c
(dB) ±0.005 (6 = 0.010) (typical)
Response time
k
(s) 0.5 (typical )