Tunable Bandpass Fiber Optic Filter

Photonics and Instrumentation
Tunable Bandpass Fiber Optic Filter
• Narrow bandwidth (0.8 nm)
Newport’s Tunable Bandpass Fiber Optic Filter is used to adjust the center wavelength of
a narrow passband within a 30 nm range around 1550 nm.
A 0.8 nm tunable filter model is offered, having a 1535–1565 nm tuning range. The
filter features high isolation, low insertion loss, low back-reflection and low
polarization sensitivity.
• High tuning resolution (0.05 nm)
• Broad tuning range (1535–1565 nm)
• Low insertion loss (1.5 dB typical)
• Low back-reflection (-50 dB max)
A thin film coating interference filter, located between two angled fiber optic collimators,
is used to select the wavelength of interest, by adjusting the tilt angle of the filter with a
high-precision micrometer having 0.05 nm resolution.
Applications for Newport’s Tunable Bandpass Filter include: sideband noise suppression
in erbium-doped fiber amplifiers (EDFA) and in tunable laser transmission systems; as
well as wavelength selection for test and measurement applications.
Specifications
Model TBF-1550-1.0
Wavelength Tuning Range (nm) 1535 to 1565
Tuning Resolution, Typical (nm) 0.05
0.5 dB Bandwidth, Typical (nm) 0.8
0.5 dB Bandwidth, Maximum (nm) 3.5
20 dB Bandwidth, Maximum (nm) 3.0
Insertion Loss, Typical (dB) (1) 1.5 (3)
Insertion Loss, Maximum (dB) (1)
3.0 (3)
Back-Reflection, Maximum (dB) -50
Polarization Dependent Loss, Typical 0.05 dB, typical @ 1565 nm; 0.3 dB @ 1535 nm
Center λ Stability (nm/°C) 0.005
Thermal Limit (dB/°C) 0.005
Fiber (2) 9/125 Singlemode
Operating Temperature (°C) +15 to +65
Storage Temperature Range (°C) -40 to +70
1) Without fiber optic connectors
2) Filters come with standard 1 m, 3 mm loose tube jacketed fiber pigtails
3) Measured at 1565 nm [dB]
Email: sales@newport.com • Web: newport.com
LOSS (dB)
POLARIZATION
DEPENDENT LOSS (dB)
TRANSMISSION (%)
5.0
4.0
3.0
2.0
1.0
0
1535
0.6
0.5
0.4
0.3
0.2
0.1
0
1535
80
70
60
50
40
30
20
10
0
Maximum
Typical
1540 1545 1550 1555 1560 1565
WAVELENGTH (nm)
1530
Dimensions
2.56
(65.0)
2.17
(55.0)
[in. (mm)]
Maximum
Typical
365
1540 1545 1550 1555 1560 1565
WAVELENGTH (nm)
1540 1550 1560
WAVELENGTH (nm)
TUNABLE BANDPASS FILTER
2.24 (57.0)
2.80 (71.0)
CLR (4)
2.72 (69.0)
MAX
1.5 dB
1570
Please call Newport’s Application Sales
Engineers to help you determine what
optical fibers or fiber optic components best
meet your needs.
POLARIZATION MEASUREMENT AND
CONTROL
LASER DIODE CONTROL LASER DIODE MOUNTS
FIBER OPTIC COMPONENTS OPTICAL FIBERS
AND ACCESSORIES
EDUCATIONAL KITS

POLARIZATION MEASUREMENT AND
CONTROL
LASER DIODE MOUNTS LASER DIODE CONTROL
FIBER OPTIC COMPONENTS
OPTICAL FIBERS
AND ACCESSORIES
EDUCATIONAL KITS
366
Photonics and Instrumentation
Ordering Information
Model Description Option Code (1)
TBF-1550-1.0 Tunable Bandpass Filter, 1550 nm, 9/125 Pigtails, No Connectors 15
1) Use only when ordering with fiber optic connectors
To order your Fiber Optic Filter with fiber optic connectors, use the following part number:
Example: FLTR-OPT-50-15-55
TBF-1550-1.0 filter with FC/SPC connector
on input and FC/APC connector on output.
FLTR-OPT- - -
Input
Connector
Code
Filter
Model
Code
Output
Connector
Code
If only a single connector is required, use the NN in the connector field designating the
unterminated end (i.e. FLTR-OPT-50-15-NN). Please see the Tutorial (see page 409) for
more information on fiber optic connectors available through Newport .
Note: Fiber optic connector termination costs are non-refundable due to the custom nature of the assembly.
Fiber Optic Isolators
Newport’s Fiber Optic Isolators are passive, fiber-pigtailed devices that reduce back
reflections and backscattering of light (highly desirable in laser applications, for example).
Three models are available to meet your particular isolation requirements.
The standard ISC Model isolator features typical peak isolations of >40 dB and very low
polarization mode dispersion.
The enhanced ISS Model and supreme ISU Model isolators feature extremely low
polarization mode dispersion and stable performance over a wide wavelength and
temperature range.
Specifications
Parameter Model ISC Model ISS Model ISU
Peak Isolation (dB) >40 >50 >60
Minimum Isolation, (±20 nm over center
wavelength) (dB)
>32 >44 >48
Insertion Loss, Typical (dB) (1) 0.4 1.0 0.6
Insertion Loss, Maximum (dB) (1) ≤0.5 ≤1.3 ≤0.7
Return Loss (Input/Output) (dB) ≥65/60 ≥60/55 ≥65/60
Polarization Dependent Loss, Typical (dB)