Three-Window Coupler (TWC)
Built by asymmetric coupling technique, TWC operating bandwidth is expanding to 1310nm, 1490nm and 1550nm three communication windows. The TWC coupler has the same coupling ratio on 1310, 1490 and 1550nm communication windows, with low excess loss and low PDL. TWC is widely used for communication systems, CATV, FTTH, where multiple optical signals pass through single fiber.
Specification Snapshot
Insertion loss [The above specification is without connector. Grade P; Coupling Ratio: 50/50]
≤3.6 dB
Insertion loss [The above specification is without connector. Grade A; Coupling Ratio: 50/50]
≤3.8 dB
Directivity [The above specification is without connector.]
≥55 dB
Operating temperature [The above specification is without connector.]
-40 ~ +85 ℃
Configuration [The above specification is without connector.]
1×2 or 2×2
Fiber type [The above specification is without connector.]
250μm bare fiber
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Overview
Built by asymmetric coupling technique, TWC operating bandwidth is expanding to 1310nm, 1490nm and 1550nm three communication windows. The TWC coupler has the same coupling ratio on 1310, 1490 and 1550nm communication windows, with low excess loss and low PDL. TWC is widely used for communication systems, CATV, FTTH, where multiple optical signals pass through single fiber.
Specifications
| Parameter | Value |
|---|---|
| Operating wavelength [The above specification is without connector.] | 1310,1490 and 1550 |
| Operating bandwidth [The above specification is without connector.] | 1310 ± 40,1490 ± 10 and 1550 ± 40 |
| Typical excess loss [The above specification is without connector. Grade P] | 0.07 dB |
| PDL [The above specification is without connector. Grade P] | ≤0.15 dB |
| Typical excess loss [The above specification is without connector. Grade A] | 0.10 dB |
| PDL [The above specification is without connector. Grade A] | ≤0.20 dB |
| Insertion loss [The above specification is without connector. Grade P; Coupling Ratio: 50/50] | ≤3.6 dB |
| Insertion loss [The above specification is without connector. Grade A; Coupling Ratio: 50/50] | ≤3.8 dB |
| Insertion loss [The above specification is without connector. Grade P; Coupling Ratio: 45/55] | ≤4.2/3.2 dB |
| Insertion loss [The above specification is without connector. Grade A; Coupling Ratio: 45/55] | ≤4.4/3.4 dB |
| Insertion loss [The above specification is without connector. Grade P; Coupling Ratio: 40/60] | ≤4.7/2.7 dB |
| Insertion loss [The above specification is without connector. Grade A; Coupling Ratio: 40/60] | ≤4.9/2.9 dB |
| Insertion loss [The above specification is without connector. Grade P; Coupling Ratio: 35/65] | ≤5.4/2.4 dB |
| Insertion loss [The above specification is without connector. Grade A; Coupling Ratio: 35/65] | ≤5.7/2.6 dB |
| Insertion loss [The above specification is without connector. Grade P; Coupling Ratio: 33/67] | ≤5.7/2.2 dB |
| Insertion loss [The above specification is without connector. Grade A; Coupling Ratio: 33/67] | ≤6.0/2.4 dB |
| Insertion loss [The above specification is without connector. Grade P; Coupling Ratio: 30/70] | ≤6.0/1.9 dB |
| Insertion loss [The above specification is without connector. Grade A; Coupling Ratio: 30/70] | ≤6.3/2.1 dB |
| Insertion loss [The above specification is without connector. Grade P; Coupling Ratio: 25/75] | ≤7.0/1.7 dB |
| Insertion loss [The above specification is without connector. Grade A; Coupling Ratio: 25/75] | ≤7.3/1.9 dB |
| Insertion loss [The above specification is without connector. Grade P; Coupling Ratio: 20/80] | ≤7.9/1.3 dB |
| Insertion loss [The above specification is without connector. Grade A; Coupling Ratio: 20/80] | ≤8.4/1.4 dB |
| Insertion loss [The above specification is without connector. Grade P; Coupling Ratio: 15/85] | ≤9.5/1.0 dB |
| Insertion loss [The above specification is without connector. Grade A; Coupling Ratio: 15/85] | ≤10.0/1.2 dB |
| Insertion loss [The above specification is without connector. Grade P; Coupling Ratio: 10/90] | 9.20~11.00/≤0.75 dB |
| Insertion loss [The above specification is without connector. Grade A; Coupling Ratio: 10/90] | 8.80~11.40/≤0.8 dB |
| Insertion loss [The above specification is without connector. Grade P; Coupling Ratio: 5/95] | 12.05~14.20/≤0.4 dB |
| Insertion loss [The above specification is without connector. Grade A; Coupling Ratio: 5/95] | 11.55~14.65/≤0.5 dB |
| Insertion loss [The above specification is without connector. Grade P; Coupling Ratio: 3/97] | 14.10~16.50/≤0.35 dB |
| Insertion loss [The above specification is without connector. Grade A; Coupling Ratio: 3/97] | 13.60~17.05/≤0.45 dB |
| Insertion loss [The above specification is without connector. Grade P; Coupling Ratio: 2/98] | 15.60~18.55/≤0.3 dB |
| Insertion loss [The above specification is without connector. Grade A; Coupling Ratio: 2/98] | 15.00~19.20/≤0.4 dB |
| Insertion loss [The above specification is without connector. Grade P; Coupling Ratio: 1/99] | 18.45~21.70/≤0.25 dB |
| Insertion loss [The above specification is without connector. Grade A; Coupling Ratio: 1/99] | 17.80~22.40/≤0.35 dB |
| Directivity [The above specification is without connector.] | ≥55 dB |
| Operating temperature [The above specification is without connector.] | -40 ~ +85 ℃ |
| Configuration [The above specification is without connector.] | 1×2 or 2×2 |
| Fiber lead length [The above specification is without connector. others on request] | 1 meter |
| Fiber type [The above specification is without connector.] | 250μm bare fiber |
| Dimensions (Ф×L) [The above specification is without connector. Fiber type: 250μm bare fiber; Other package dimensions can be made on customer request.] | Ф3.0mm×54mm / Ф2.4mm×42mm |
| Fiber type [The above specification is without connector.] | 900μm loose tube |
| Dimensions (Ф×L) [The above specification is without connector. Fiber type: 900μm loose tube; Other package dimensions can be made on customer request.] | Ф3.0mm×54mm |
| Fiber type [The above specification is without connector.] | 900μm/2mm/3mm loose tube |
| Dimensions (Ф×L) [The above specification is without connector. Fiber type: 900μm/2mm/3mm loose tube; Other package dimensions can be made on customer request.] | 90mm×14mm×8.5mm |
Applications
Optical communication systems; CATV; FTTH
Key Features
(cid:131) Low excess loss；(cid:131) Low PDL；(cid:131) Three operating windows；(cid:131) High stability and reliability
Datasheet
Product Datasheet
PDF
Supplier Information
Shenzhen LightComm Technology Co., Ltd., founded in 2001 by Dr. Yue Chaoyu, an optical fiber expert from Tsinghua University, is engaged in the R&D, production and sales of optoelectronic devices and equipment. It maintains leading advantages in key technologies of optical devices, with world-leading capacity in optical couplers and high-power fiber combiners, having replaced imports. Products and R&D cover fiber transmission fields, and the company is recognized as a national high-tech enterprise and a specialized 'Little Giant' enterprise. It has relocated to a high-tech park with over 8000 m² area. The company holds numerous patents and has participated in major national projects.
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