Name: Luna FFP-TF2 Tunable Fiber Fabry-Perot Filter
Brand: Luna
SKU: FFP-TF2

Overview

The Luna FFP-TF2 is a Fiber Fabry-Perot (FFP) tunable filter built around an all-fiber Fabry-Perot super-cavity in a fast-tuning package. It is based on Luna's patented FFP technology, which combines high finesse with low insertion loss.

The filter uses a lensless all-fiber construction with no collimating optics or lenses. This design avoids issues found in other Fabry-Perot component technologies, such as misalignment, environmental sensitivity and extraneous modes.

The transmission of the FFP tunable filter follows the Airy function, so engineers integrating it into OEM systems can expect results very close to the theoretical mathematical model.

Compared with the FFP-TF, the FFP-TF2 design provides improved etalon alignment for stable long-term operation, high reliability and Telcordia-qualified performance. Several standard configurations are available, and custom multi-band configurations can be specified for specialized applications.

Key Features

All-fiber platform
High resolution and low loss design
Super-cavity finesse
Vibration and shock resistant
Thermally stable
Fast scanning and large dynamic range for fast, accurate measurements
Suited to OEM applications
Small footprint
Low power requirements
Telcordia GR 2883 qualified
Improved etalon alignment for stable long-term performance
Customizable wavelength, free spectral range, finesse and bandwidth

Specifications

Optical Properties

Operating wavelength range	1520 - 1620 nm Standard configurations
Free spectral range Finesse 100, Finesse 500, Finesse 650, Finesse 1000, Finesse 2000	15 THz (120 nm) – 27.5 THz (220 nm) FSRs are fixed but customizable within these ranges
Free spectral range Finesse 6000	27.5 THz (220 nm) FSRs are fixed but customizable within these ranges
Finesse	100, 500, 650, 1000, 2000, 6000 Standard specifications are fixed configurations
Bandwidth (FWHM or 3dB) Finesse 100	150 GHz (1200 pm) – 275 GHz (2200 pm) Bandwidth tolerances are typically +/-20%
Bandwidth (FWHM or 3dB) Finesse 500	30 GHz (240 pm) – 55 GHz (440 pm) Bandwidth tolerances are typically +/-20%
Bandwidth (FWHM or 3dB) Finesse 650	23 GHz (185 pm) – 42 GHz (338 pm) Bandwidth tolerances are typically +/-20%
Bandwidth (FWHM or 3dB) Finesse 1000	15 GHz (120 pm) – 27.5 GHz (220 pm) Bandwidth tolerances are typically +/-20%
Bandwidth (FWHM or 3dB) Finesse 2000	7.5 GHz (60 pm) – 13.8 GHz (110 pm) Bandwidth tolerances are typically +/-20%
Bandwidth (FWHM or 3dB) Finesse 6000	4.6 GHz (37 pm) Bandwidth tolerances are typically +/-20%
Insertion loss Finesse 100, Finesse 500, Finesse 650	< 2.5 dB
Insertion loss Finesse 1000, Finesse 2000, Finesse 6000	< 3.0 dB
Polarization dependent loss	<0.2 dB
Input power Finesse 100	310 mW
Input power Finesse 500	50 mW
Input power Finesse 650	48 mW
Input power Finesse 1000	30 mW
Input power Finesse 2000	15 mW
Input power Finesse 6000	5 mW

Electrical Properties

Tuning voltages/FSR	< 18 V
Tuning rate/FSR	800 Hz Recommended maximum
Capacitance	< 3 μF
Tuning voltage, maximum	70 V

Mechanical Properties

Dimensions	13.5 mm x 25.8 mm x 57.2 mm
Weight	53 g
Mounting holes	(4) #1-72 UNF x 0.16” deep
Cable jacket	900 μm loose buffer tubing
Cable length	~ 1 m

Environmental Properties

Operating temperature	-20 to 80 °C Complies to Telcordia GR 2883
Change in voltage	< 19 V Locking voltage verified over -20 to 80 °C range; neither specified nor tested for bandwidth less than 2 GHz

Custom and OEM Options

Wavelength bands	from 800 to 2000 nm Custom configuration
Free spectral range	100 to 40,000 GHz Custom configuration
Finesse	up to 16,000 Custom configuration
Bandwidth	from MHz to GHz Custom configuration

Ordering

Part number format	FFP-TF2-wwww-wwww-bbbu-fffff-ii-ccc wwww = operating wavelength range (e.g. 1520 - 1620); bbb = bandwidth (e.g. 015 = 15 GHz); u = bandwidth unit (G = GHz, M = MHz); fffff = finesse (e.g. 01000); ii = insertion loss (e.g. 2.5 = 2.5 dB); ccc = connector

Specifications are taken from the manufacturer's documentation. See the datasheet for complete and current values.