Todays deals on Optical Filter?

Santec OTF-910/OPT Optical Tunable Filter $3,749.00

OPTICAL FILTER ASML 4022.431.1218-2 – REFURBISHED $1,000.00

ORIEL 61945 Optical Die Filter Liquid high power Laser Light Source $420.00

Motorized Filter Wheel 8-Position SS Acton Flange W/ Lens Optic Optical Encoder $349.00

1625nm Wavelength Optical Fiber Filter WDM FTTX Instrument Light Transmittance $299.00

1550nm Wavelength Optical Fiber Filter WDM FTTX Instrument Light Transmittance $286.00

1490nm Wavelength Optical Fiber Filter WDM FTTX Instrument Light Transmittance $275.00

1310nm Wavelength Optical Fiber Filter WDM FTTX Instrument Light Transmittance $268.00

Newport U200-A Mirror Mount w/ 50mm Optical Filter Lens $205.00

Optical Assembly w Hansen motorized filter wheel; beam spliitter; mounts $200.00

Optical Filter 637NB2 25mm Quantum Optics Nitrogen V Diamond $170.00

Optical Filter 758NB2 25mm Laser photodecomposition of Cs2 $140.00

Laser Optics Mirror / Filter 50.69mm dia x 9.59mm width $75.00

Laser Optics Mirror / Filter 24.07 mm x 19.85 mm $75.00

Laser Optics Mirror / Filter 24.07 mm x 19.85 mm $75.00

Laser Optics Mirror / Filter 25.25mm dia x 4.82mm width $75.00

Laser Optics Mirror / Filter 25.38mm dia x 6.25mm width $75.00

Laser Optics Mirror / Filter 24.59mm dia x 4.03mm width $75.00

Laser Optics Mirror / Filter 25.31mm dia x 6.29mm width $75.00

Laser Optics Mirror / Filter rt angle prism 17.88 x 9.1 $75.00

Laser Optics Mirror / Filter 24.92mm dia x 6.12mm width $75.00

Laser Optics Mirror / Filter 25.17mm dia x 6.12mm width $75.00

Laser Optics Mirror / Filter 25.44mm dia x 8.20mm width $75.00

Laser Optic Mount w/ 45mm Lens Filter ~ very nice setup $65.00

GLOBAL OPTICOM BFW1415B100 2×1 OPTICAL FILTER $50.00

Optical Interference Filter 545AGLP 50mm Green Barrier $62.50

Agilent/ HP 81001FF Filter Interface for Optical Sensor $60.00

Optical Filter Raman Edge 522 Blk 514.5 Argon 50mm $59.50

Optical Filter Laser Rejection 532 & 694 & 1064nm 50mm $55.50

Optical Filter Laser Band Pass 337BP10 NOS 25mm Omega $52.50

Optical Interference Filter 214BP10 25mm Cd NOS Ome $44.50

Optical Filter 535BP50 50X5mm Viewing Green Emission $42.50

Optical Filter Color Majenta 50x50x1mm Normal $39.50

Optical Filter 261AELP 25.0mm Block Hg 254 $39.50

Optical Filter Dichroic 485,555,650 Laser Co 26×36 @45 $39.50

Optical Filter Barrier 810CFLP 58.6mm mm IR Window $39.50

Optical Filter 546BP20 28mm Mercury Emission Eyepiece Mount $37.50

Optical Filter Dichroic 480DRLP 25X36 Beamsplitter @45 $35.50

Optical Filter Dichroic 480DRLP 26X36 Beamsplitter @45 $35.50

Optical Filter Dichroic 560DRLP 26x36mm Beamsplitter 45 $34.50

Optical Filter 325BP10 25.4mm Excite Fluorescence $34.50

Laser Mount for Multiple Optic Elements 1″-2″ w/Coherent Filter & Convex Window $39.00

Newport FH-1S Filter Holder, 1″ Optics (NEW) $35.00

Optical Filter Dichroic 460DRLP 26X36 Beamsplitter @45 $32.50

Optical Filter Dichroic 650DRSP 26×36 Beamsplitter @45 $32.50

Optical Filter Dichroic 505DRLP 25×36 Beamsplitter @45 $32.50

Optical Filter Laser Band Pass 337BP10 NOS 19mm Omega $29.50

Optical Filter Laser Band Pass 633DF10 NOS 20mm Omega $29.50

Optical Interference Filter 488NB1 12.5mm Argon Laser $29.50

Optical Filter 280NB10 5.5mm DNA analyser $29.50

Optical Filter Coating Cold Window 26x36x3mm $29.50

Optical Filter Dichroic 575DCSP 25mm Beamsplitter @45 $29.50

Optical Interference Filter 550DF20 TRITC Cy3 Em 25.4mm $29.50

Optical Filter Dichroic 500DRSP 25×36 Beamsplitter @45 $29.50

Optical Filter Dichroic 805DMSP 25.4mm Beamsplitter @45 $29.50

Optical Filter 410ALP 25.mm, Emission Barrier $29.50

Optical Filter Dichroic 660DRLP 25X36mm Beamsplitter@45 $29.50

Optical Filter 546BP20 28mm Mercury Emission Isolation $29.50

Optical Filter Laser Rejection 532 & 1064nm 25mm Omega $29.49

Optical Filter 450AF50 FITC Bodipy 25mm Green Exciter $27.50

Optical Interference Filter 585DF40 25.4mm Yel Emission $27.50

Optical Filter Dichroic 380DCLP 18X25 Beamsplitter @45 $27.50

Optical Filter Dichroic 410DCLP 25X36 Beamsplitter @45 $27.50

Optical Filter Dichroic 460DCSPext 25 Beamsplitter @45 $27.50

Optical Filter Dichroic 405DCLP 15X25 Beamsplitter @45 $27.50

Optical Filter Dichroic 405DCLP 18X26x1 Beamsplitter@45 $27.50

Optical Interference Filter 475DF50 25mm DAPI Blue Ex $27.50

Optical Filter Dichroic 610DRSP 15×15 Beamsplitter @45 $25.99

Optical Filter Dichroic 480DRLPex 18mm Beamsplitter @45 $25.99

Optical Filter Dichroic 480DRLPex 22mm Beamsplitter @45 $25.99

Optical Filter Laser Rejection 514RB40 25mm NOS Omega $25.50

Optical Interference Filter 340BP12 22mm Fura $25.50

Optical Filter 682DF22 Cy5 Red Emission 25.4mm $25.50

Sputtered Optical Filter 610DF10 11.5mm dia $24.99

Sputtered Optical Filter 582DF10 11.5mm dia $24.99

Optical Filter 365BP10 25mm Excite Mercury Exiter $24.50

Optical Interference Filter 214BP10 12.7mm Cd NOS Ome $24.50

Optical Interference Filter 720BP10 25mm Infrared $24.50

Optical Filter Dichroic 288DCLP 25.4mm Beamsplitter @45 $24.50

Optical Filter Dichroic 890DClP 25mm Beamsplitter @0 $24.50

Optical Filter Dichroic 770DRLP 25.4 Beamsplitter @45 $24.50

Optical Filter Dichroic 250DCLP 25mm Beamsplitter @45 $24.50

Optical Filter 670DF14 25.4mm Diode Laser Absorption $24.50

Optical Filter Dichroic 580DCSP 25mm Beamsplitter @45 $24.50

Optical Filter Dichroic 310DCLP 25.4mm Beamsplitter @45 $24.50

Optical Filter 530BP50 25mm Viewing Green Emission $24.50

Optical Filter 460LFRED Blue Emission 25mm Omega $24.49

Optical Interference Filter 775DF60 24.5 mm IR Laser $23.50

Optical Filter 750EFLP 25mm IR transmitting Omega $23.50

Optical Interference Filter 535DF55 22mm Cy2 $22.50

Optical Interference Filter 549DF8 25mm Mercury Green $22.50

Optical Filter 280NB10 12.5mm DNA analyser $22.50

Optical Interference Filter 595AF60 24.4mm Yellow/Orang $22.50

Optical Filter 530DF30 25mm FITC Light by Omega $22.50

Optical Filter Dichroic 510DCSP 25mm Beamsplitter @45 $22.50

Optical Filter Beamsplitter Vis 35X35 or 25mm @45 $22.50

Optical Filter Dichroic 436DCLP 25mm Beamsplitter @45 $22.50

Optical Filter Dichroic 580DCLP 14X20mm Beamsplitter@45 $22.50

Optical Filter, 675DF10, 25mm dia, metal ring $24.00

Optical Filter 670DF40 14.5mm LED or Laser Exciter Cy5 $19.50

Optical Filter Questions

The Basics of Passive Optical Networking

A passive optical network (PON) configuration reduces the amount of fiber and networking infrastructure necessary as compared to traditional point to point architectures.

Wave Division Multiplexing (WDM) is used to combine and break-out multiple optical carrier signals on a single optical fiber by using different wavelengths (aka colors) of laser light to carry the different signals. This technology permits for a multiplication in capacity, in addition to enabling bidirectional communications over one strand of fiber.

Downstream signal coming from the service head-end to the endpoints is broadcast to each end-point sharing a single fiber shared via an optical splitter. Encryption of the communication traffic is typically used in order to prevent eavesdropping.  Upstream signals are combined using a multiple access protocol. Generally, Time Division Multiple Access (TDMA) is employed to administer the time slot assignments for upstream communication.

A device called an Optical Network Terminal (ONT), also called an Optical Network Unit (ONU), converts the optical signal into an electrical signal. Optical network terminals require electrical power for their operation, so some providers connect them to back-up batteries in case of power outages. Optical network units use thin film filter technology to convert between optical and electrical signals.

For fiber to the home and for some forms of fiber to the building, it is common for the building’s existing phone systems, local area networks, and cable TV systems to connect directly to the ONT. The domestic and international standards used to govern this technology are as follows:

IEEE 802.3ah – EPON or GEPON (Ethernet PON) is an IEEE/EFM standard for using Ethernet for packet data. 802.3ah is now part of the IEEE 802.3 standard. There are currently over 25 million installed EPON subscribers.

ITU-T G.984 – GPON (Gigabit PON) is an evolution of the BPON standard. It supports higher rates, enhanced security, and choice of Layer 2 protocol (ATM, GEM, Ethernet).

IEEE 802.3av – 10G-EPON (10 Gigabit Ethernet PON) is an IEEE Task Force for 10Gbit/s, backward compatible with 802.3ah EPON. 10GEPON will use separate wavelengths for 10G and 1G downstream. 802.3av will continue to use a single wavelength for both 10G and 1G upstream with TDMA separation.

About the Author

Dr. James Reynante is a specialist in systems architecture & design. His expertise includes the application and integration of various technologies including advanced fiber optical networking, alternative energy development, computer modeling, and RF communications. He holds a PhD in Computer Science and is currently serving as an Assistant Vice President and Chief Engineer for Science Applications International Corporation (SAIC), a Fortune 500 scientific R&D company. Additionally, Dr. Reynante is also the Director of Engineering for Spada Innovations, a cutting-edge “green technology” company.

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